| 单词 | z-axis |
| 例句 | Also, describe how the strength of the magnetic field varies according to the distance from the z-axis. College Physics for AP Courses 2015-08-12T00:00:00Z Since a single point does not tell us what the shape is, we can move up the z-axis to an arbitrary plane to find the shape of other traces of the figure. Calculus, Volume 3 2016-03-30T00:00:00Z To represent equations involving three unknowns x, y, z, a third axis is introduced, the z-axis, perpendicular to the plane xy and passing through the intersection of the lines x, y. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 7 "Equation" to "Ethics" 2011-02-27T03:00:31.973Z Let the center of Earth be the center of the sphere, with the ray from the center through the North Pole representing the positive z-axis. Calculus, Volume 3 2016-03-30T00:00:00Z We can add a third dimension, the z-axis, which is perpendicular to both the x-axis and the y-axis. Calculus, Volume 3 2016-03-30T00:00:00Z Therefore, the lines composing this surface are parallel to the z-axis. Calculus, Volume 3 2016-03-30T00:00:00Z The points on these surfaces are at a fixed distance from the z-axis. Calculus, Volume 3 2016-03-30T00:00:00Z One possible choice is to align the z-axis with the axis of symmetry of the weight block. Calculus, Volume 3 2016-03-30T00:00:00Z Choose the z-axis to align with the axis of the cone. Calculus, Volume 3 2016-03-30T00:00:00Z In this case, however, we would likely choose to orient our z-axis with the center axis of the pipeline. Calculus, Volume 3 2016-03-30T00:00:00Z The coefficients of x2 and y2 are equal, so the cross-section of the paraboloid perpendicular to the z-axis is a circle. Calculus, Volume 3 2016-03-30T00:00:00Z This is the equation of a cone centered on the z-axis. Calculus, Volume 3 2016-03-30T00:00:00Z The curve resembles a spring, with a circular cross-section looking down along the z-axis. Calculus, Volume 3 2016-03-30T00:00:00Z The field is rotational in nature and, for a given circle parallel to the xy-plane that has a center on the z-axis, the vectors along that circle are all the same magnitude. Calculus, Volume 3 2016-03-30T00:00:00Z |
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