| 单词 | epicyclic |
| 例句 | The ancient Greeks did not know about elliptical orbits, but they explained the moon’s subtle motion by combining two circular motions in what is called an epicyclic theory. An Ancient Greek Astronomical Calculation Machine Reveals New Secrets 2021-12-14T05:00:00Z It is driven by epicyclic gearing, the cam being driven by an internal gear machined integrally with it, the cam being turned at 7⁄8 times the engine speed. Aviation Engines Design?Construction?Operation and Repair 2011-12-04T03:00:04.777Z All the variable speed gears at present made consist of toothed wheel mechanism either at the hub or crank-bracket, and nearly all are based on the same epicyclic train of toothed wheels. Encyclopaedia Britannica, 11th Edition, Volume 3, Slice 7 "Bible" to "Bisectrix" 2010-12-20T17:12:05.780Z Kepler gave his fancy play in the choice of an oval, greater at one end than the other, endeavouring to satisfy some ideas about epicyclic motion, but could not find a satisfactory curve. Kepler In both classes, the action involves the use of some sort of epicyclic train, since the motions to be explained are both orbital and axial. Scientific American Supplement, No. 447, July 26, 1884 I figured out how the mechanism calculated the epicyclic theory by building on a remarkable observation by Wright. An Ancient Greek Astronomical Calculation Machine Reveals New Secrets 2021-12-14T05:00:00Z Some employ only concentric circles, others use eccentric and epicyclic ones, with which, however, they do not fully attain the desired end. A History of Science — Volume 2 In the high gear position the epicyclic toothed wheels are to the extreme left position. Encyclopaedia Britannica, 11th Edition, Volume 3, Slice 7 "Bible" to "Bisectrix" 2010-12-20T17:12:05.780Z Following Price, Wright proposed that an extensive epicyclic system—the two-circles idea the Greeks used to explain the odd reversing motions of the planets—had been mounted on the main drive wheel. An Ancient Greek Astronomical Calculation Machine Reveals New Secrets 2021-12-14T05:00:00Z Wright showed that the epicyclic theories could be translated into epicyclic gear trains with pin-and-slot mechanisms to display the planets’ variable motions. An Ancient Greek Astronomical Calculation Machine Reveals New Secrets 2021-12-14T05:00:00Z Calculating the epicyclic theory of the moon with epicyclic pin-and-slot gears in this subtle and indirect way was an extraordinary conception by the ancient Greeks. An Ancient Greek Astronomical Calculation Machine Reveals New Secrets 2021-12-14T05:00:00Z The epicyclic gearing for this dragon hand also exactly explained a prominent bearing on one of the spokes that had previously appeared to have no function. An Ancient Greek Astronomical Calculation Machine Reveals New Secrets 2021-12-14T05:00:00Z |
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