| 单词 | major axis |
| 例句 | They were most rapid in Eurasia, because of its east-west major axis and its relatively modest ecological and geographical barriers. Guns, Germs, and Steel: The Fates of Human Societies 1997-03-01T00:00:00Z Its east—west major axis permitted many inventions adopted in one part of Eurasia to spread relatively rapidly to societies at similar latitudes and climates elsewhere in Eurasia. Guns, Germs, and Steel: The Fates of Human Societies 1997-03-01T00:00:00Z The result is to make the major axis of Mercury’s orbit rotate slowly in space because of the Sun’s gravity alone. Astronomy 2016-10-13T00:00:00Z A segment perpendicular to the major axis that passes through the center and intersects the ellipse in two points is called the minor axis. Intermediate Algebra 2020-05-06T00:00:00Z In the equation on the left, the major axis of the conic section is horizontal, and in the equation on the right, the major axis is vertical. Calculus, Vol 2 2016-03-30T00:00:00Z By placing the major axis along the x-axis, find the average distance from Earth to the Sun. Calculus, Volume 1 2016-03-30T00:00:00Z Next, we determine the position of the major axis. Algebra and Trigonometry 2015-02-13T00:00:00Z The major axis of the orbit of a planet, such as Mercury, rotates in space slightly because of various perturbations. Astronomy 2016-10-13T00:00:00Z When b > a, the major axis is vertical so the distance from the center to the vertex is b. Intermediate Algebra 2020-05-06T00:00:00Z The major axis is always the longest distance across the ellipse, and can be horizontal or vertical. Calculus, Vol 2 2016-03-30T00:00:00Z “The targeted orbit was circular, inclined at 55 degrees with a semi major axis of 29,900 kilometers,” the company said in a statement. ESA Galileo Satellites Were Placed In The Wrong Orbit 2014-08-24T04:00:00Z Because the major axis is parallel to the y-axis. Algebra and Trigonometry 2015-02-13T00:00:00Z The widest diameter of the ellipse is called its major axis. Astronomy 2016-10-13T00:00:00Z Since the major axis is horizontal and the distance from the center to the vertex is 40, we know a = 40 and so a2 = 1600 . Intermediate Algebra 2020-05-06T00:00:00Z Thus, the length of the major axis in this ellipse is 2a. Calculus, Vol 2 2016-03-30T00:00:00Z The number of the craters is seven; of these five form a vast elliptical enclosure, the major axis of which is directed toward the north-east. The Catholic World; Volume I, Issues 1-6 A Monthly Eclectic Magazine 2012-04-05T02:00:40.207Z The longer axis is called the major axis, and the shorter axis is called the minor axis. Algebra and Trigonometry 2015-02-13T00:00:00Z The distance 2a is called the major axis of the ellipse. Astronomy 2016-10-13T00:00:00Z The segment connecting the vertices is called the major axis. Intermediate Algebra 2020-05-06T00:00:00Z The transverse axis is also called the major axis, and the conjugate axis is also called the minor axis. Calculus, Vol 2 2016-03-30T00:00:00Z This fissure, and also a depression of the crater Frumento, is in a right line with the major axis of the ellipse formed by the craters. The Catholic World; Volume I, Issues 1-6 A Monthly Eclectic Magazine 2012-04-05T02:00:40.207Z Because the major axis is on the y-axis. Algebra and Trigonometry 2015-02-13T00:00:00Z The ratio of the distance between the foci to the length of the major axis is called the eccentricity of the ellipse. Astronomy 2016-10-13T00:00:00Z Determine whether the major axis is horizontal or vertical. Intermediate Algebra 2020-05-06T00:00:00Z The two axes of the ellipse are the major axis and the minor axis, and the two axes of the hyperbola are the transverse axis and the conjugate axis. Webster's Unabridged Dictionary (2nd 100 Pages) 2012-03-24T02:00:19.387Z But this complication may be avoided by using an odd number of teeth, since, placing a tooth at one extremity of the major axis, a space will come at the other. Modern Machine-Shop Practice, Volumes I and II 2012-03-23T02:00:33.140Z Because the major axis is on the x-axis. Algebra and Trigonometry 2015-02-13T00:00:00Z If the major axis of an ellipse is 16 cm, what is the semimajor axis? Astronomy 2016-10-13T00:00:00Z When b > a, the major axis is vertical so the distance from the center to the vertex is b. Intermediate Algebra 2020-05-06T00:00:00Z The minor axis or greatest breadth is about one-half the major axis or length. Astronomy: The Science of the Heavenly Bodies 2012-03-17T02:01:02.630Z The major axis of the uplift, although exhibiting a double curvature, has a general northeast and southwest trend. North America 2011-05-05T02:00:20.027Z Now that the equation is in standard form, we can determine the position of the major axis. Algebra and Trigonometry 2015-02-13T00:00:00Z A and B are the foci, D the centre, EF the major axis, GH the minor axis, and the fraction DA/DE the eccentricity of the ellipse. The New Gresham Encyclopedia Volume 4, Part 2: Ebert to Estremadura 2011-04-14T02:00:56.200Z The segment connecting the vertices is called the major axis. Intermediate Algebra 2020-05-06T00:00:00Z For example, it explained the difference between the calculated and observed rates of precession of the major axis of Mercury's orbit, which represented a long-standing mystery of classical celestial mechanics. Gravity, by George Gamow [Special Archive Article] 2011-03-04T13:45:00.433Z If now the strip be moved so that the point a is always on the minor axis, and the point b on the major axis, the point P describes the ellipse. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 3 "Electrostatics" to "Engis" 2011-02-06T03:00:53.093Z Because the major axis is parallel to the x-axis. Algebra and Trigonometry 2015-02-13T00:00:00Z In the case of α Centauri the true orbit proves to have a major axis 47 times, and a minor axis 40 times, as great as the distance of the earth from the sun. A Text-Book of Astronomy 2011-01-05T03:00:57.347Z The speed of the latter may, therefore, be expressed as a function of its radius vector at the moment and of the major axis of its orbit without introducing any other elements into the expression. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 7 "Arundel, Thomas" to "Athens" The section of a nodule is a sharp ellipse with its major axis parallel to the cleavage. The Glaciers of the Alps Being a narrative of excursions and ascents, etc. From this or otherwise it is readily deduced that the ordinates of an ellipse and of the circle described on the major axis are in the ratio of the minor to the major axis. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 3 "Electrostatics" to "Engis" 2011-02-06T03:00:53.093Z Write the parametric equations of an ellipse with center major axis of length 10, minor axis of length 6, and a counterclockwise orientation. Algebra and Trigonometry 2015-02-13T00:00:00Z The building is elliptical in plan and measures 620 ft. for the major axis and 513 ft. for the minor axis. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 4 "Aram, Eugene" to "Arcueil" The “line of apsides” is that which joins them, forming the major axis of the orbit. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 3 "Apollodorus" to "Aral" Let AB be the major axis of the orbit, B the pericentre, F the focus or centre of motion, P the position of the body. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 2 "Anjar" to "Apollo" Its major axis is about 90 or 100 versts in length, its minor axis not more than twenty versts. The Life of Yakoob Beg Athalik Ghazi, and Badaulet; Ameer of Kashgar Next, we find The length of the major axis, is bounded by the vertices. Algebra and Trigonometry 2015-02-13T00:00:00Z Theoretically considering the projectile to be composed of a series of discs a line drawn parallel to the major axis, while at rest, would be represented by the line cd. The Development of Armor-piercing Shells with Suggestions for their Improvement It is numerically expressed by the ratio of the differences of the axes to the major axis of the spheroid. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 7 "Columbus" to "Condottiere" The anomaly is then the angle BFP which the radius vector makes with the major axis. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 2 "Anjar" to "Apollo" A smart blow on the edge splits them along on the major axis, and exposes the interesting inclosure. The Cruise of the Betsey or, A Summer Ramble Among the Fossiliferous Deposits of the Hebrides. With Rambles of a Geologist or, Ten Thousand Miles Over the Fossiliferous Deposits of Scotland The quantity to be determined, or "mean distance," is that lying midway between these extremes—is, in other words, half the major axis of the ellipse in which the earth travels. A Popular History of Astronomy During the Nineteenth Century Fourth Edition Consequently any flaws occurring in the material will extend parallel to the grain or major axis. The Development of Armor-piercing Shells with Suggestions for their Improvement The major axis of these cells is always vertical. The Glow-Worm and Other Beetles Drop the perpendicular RPQ through P, the position of the planet, upon the major axis. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 2 "Anjar" to "Apollo" Half of this major axis, or, what comes to the same thing, the angle which the radius of the earth's orbit subtends as seen from the star, is called the star's "annual parallax." The Story of the Heavens The normal is the perpendicular from the point on the major axis; it is the line of thought directed by the observance of just laws and rules. The Romance of Mathematics Being the Original Researches of a Lady Professor of Girtham College in Polemical Science, with some Account of the Social Properties of a Conic; Equations to Brain Waves; Social Forces; and the Laws of Political Motion. In a planetary orbit, signifies the line perpendicular to the major axis, and passing through the centre of the ellipse. The Sailor's Word-Book An Alphabetical Digest of Nautical Terms, including Some More Especially Military and Scientific, but Useful to Seamen; as well as Archaisms of Early Voyagers, etc. But in June it has lost this withered appearance; it represents a perfect balloon, an ellipsoid of which the sections perpendicular to the major axis are circles. The Glow-Worm and Other Beetles First, occupying the major axis of body we perceive the primitive vertebral column. Darwin, and After Darwin (Vol. 1 and 3, of 3) An Exposition of the Darwinian Theory and a Discussion of Post-Darwinian Questions In a somewhat more popular manner, we would say that one thousand times the major axis of the very largest parallactic ellipse would not be as great as the diameter of the full moon. The Story of the Heavens Spindle-shaped world—about 100,000 miles along its major axis—more details to be published later. The Book of the Damned Step off two points or marking places, as we shall term them, equidistant from the line B, and marked C, C. These marks will then represent the diameter of the ellipse across its major axis. Practical Mechanics for Boys The major axis of the lower surface averages half an inch in length and the minor axis a quarter of an inch. The Glow-Worm and Other Beetles We may take any point along the major axis, as shown, for instance, in Fig. Carpentry for Boys In a Simple Language, Including Chapters on Drawing, Laying Out Work, Designing and Architecture With 250 Original Illustrations It is, however, found that no matter how great the eccentricity may become, the major axis always retains its original length. The Story of the Heavens May it not rather be owing to the change of inclination of the major axis of the orbit, to the central plane of the vortex? Outlines of a Mechanical Theory of Storms Containing the True Law of Lunar Influence If you look at a disk at an angle of about 30 degrees it will be half of the distance across the major axis p. Practical Mechanics for Boys If the earth's orbit were an ellipse, the major axis of which remained in the same position, we could readily reckon all the effects which arise from the variations of the great year. Outlines of the Earth's History A Popular Study in Physiography Its major axis runs parallel to the coastline, or nearly due east and west. To The Gold Coast for Gold, Vol. II A Personal Narrative Motion of the perihelion of the terrestrial orbit.—The major axis of the orbit of each planet is in a state of continual movement from the disturbing action of the other planets. Biographies of Distinguished Scientific Men The strike of large masses of foliated gneiss is parallel with the major axis of the Lake, and all are tilted on edge. The Last Journals of David Livingstone, in Central Africa, from 1865 to His Death, Volume I (of 2), 1866-1868 Draw a horizontal line, A, which is in the direction of the major axis of the ellipse—that is, the longest distance across. Practical Mechanics for Boys But pour a beam of direct sunlight from end to end along its major axis. Among the Forces Apsis, plural apsides, the line joining the aphelion and perihelion points; or the major axis of elliptical orbits. Recreations in Astronomy With Directions for Practical Experiments and Telescopic Work On the Holm of Papa-Westra in the Orkneys there is an elliptical cairn of this kind containing a long rectangular chamber running along its major axis with seven small circular niches opening off it. Rough Stone Monuments and Their Builders This matter diminished the tangential force, and with it the major axis of the comet's orbit. COSMOS: A Sketch of the Physical Description of the Universe, Vol. 1 The exterior dimensions of the nest are about 5½ inches for the major axis, and 3 inches for the minor. The Nests and Eggs of Indian Birds, Volume 1 It immediately assumes the form of an ellipse or oval, and darts off with great speed, revolving on its major axis as it does so. Scientific American Supplement, No. 460, October 25, 1884 Eccentricity of an ellipse, the distance of either focus from centre divided by half the major axis. Recreations in Astronomy With Directions for Practical Experiments and Telescopic Work The greatest diameter of the ellipse is the major axis, and the least diameter is the minor axis. The Gutenberg Webster's Unabridged Dictionary Section D and E The minor axis, on the other hand, is not constant, but, as we have already seen, depends on the latitude, being the product of the major axis into the sine of the latitude. The Project Gutenberg Encyclopedia Volume 1 of 28 The nest was in an upright position, the major axis perpendicular to the horizon. The Nests and Eggs of Indian Birds, Volume 1 Kepler found the sun to be in one focus, say S. AB is the major axis. History of Astronomy Draw a narrow ellipse, with this line as its major axis, and shade it. Ancient and Modern Physics Its major axis," he went on, his voice sinking almost to a caress, "is formed by the Rocky Mountains, which are practically a prolongation of the Cordilleran Range. Moonbeams from the Larger Lunacy Its form is that of an ellipsoid, with a major axis 26 millimetres in length, while the minor axis measures 11 millimetres. More Hunting Wasps These cocoons are oval-shaped and may be regarded as ellipsoids formed by a revolution around the major axis. Bramble-Bees and Others At the end of this long tunnel, which the straw which I use for sounding despairs of ever reaching, the cells are at last encountered, oval cavities with a horizontal major axis. More Hunting Wasps |
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