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1.Applications to physics: the oscillator and planetary motion.
物理上的应用:谐振和行星运动收藏指正
2.German astronomer who first stated laws of planetary motion (1571-1630).
第一个阐述行星运动定律的德国天文学家(1517-1630)。收藏指正
3.(astronomy) one of three empirical laws of planetary motion stated by Johannes Kepler.
(天文)开普勒三个天体运动定律之一。收藏指正
4.Johannes Kepler confirms his previously rejected discovery of the third law of planetary motion (he first discovered it on March 8 but soon rejected the idea after some initial calculations were made).
1618年的今天,约翰尼斯·开普勒肯定了先前被否决的发现的行星运行第三大定律(他于3月8日首次发现这一理论但是在随后的最初的计算后否认了这一说法)。收藏指正
5.THE DEVELOPMENT OF K─H─V DOUBLE─CYCLOID BALL PLANETARY REDUCER──MOTION PRINCIPLE ANALYSIS
K─H─V双摆线钢球行星传动减速器的研制──运动分析收藏指正
6.The midlatitude quasi-stationary planetary waves forced by topography and heat sources are computed by means of a β-plane approximation, quasigeostrophic model in which eddy viscosity and Newtonian cooling are included- Moreover, by comparing between the results computed by this model and Burger equation model, it is shown that the quasi-geostrophic model is suitable for the planetary-scale motion whose meridional wavelength is not large, while Burger equation can not correctly describe this kind of planetary-scale motion.
本文还利用一个包含涡旋粘性、Newton冷却的β平面近似准地转模式,计算了中纬度地形与热源强迫所产生的准定常行星波,并且与用Burger方程的计算结果相比较,表明了准地转模式适用于经向度不太大的行星尺度运动,而Burger方程则不能正确描述这类行星尺度运动.收藏指正
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