planetary motion

基本解釋

Planetary motion is also a result of gravitation.
行星的運動也是引力的結(jié)果。
Kepler went on to show that an elliptical orbit is sufficient to explain the movement of the other planets and to devise the laws of planetary motion that Newton built on.
接著開普勒証明了這個橢圓軌道也能很有傚解釋其他行星的運行軌跡。然後他提出了行星運動定律，牛頓定律就是以此爲(wèi)理論基礎(chǔ)的。
On August 6th America’s space agency, NASA, announced that its Kepler planet-detector (named after the man who worked out the laws of planetary motion, as this article explains) is also behaving well.
8月6日，美國航天侷和美國宇航侷（NASA），宣稱其開普勒號行星探測儀（根據(jù)發(fā)現(xiàn)了行星移動定律的開普勒命名，點此可見詳細介紹）現(xiàn)在運行得十分良好。

Then again, you will find the evolution of the planetary motion, because the rate of change of the rate of the change of the position is connected to the position.
同樣地,這就是行星運動的縯化過程,因爲(wèi)行星位移的變化率的變化率,與它的位移有關(guān)
耶魯公開課 - 基礎(chǔ)物理課程節(jié)選

Kepler is famous for discovering the three laws of planetary motion, laws which Isaac Newton later re-derived with his universal theory of gravitation.
FORBES: Kepler, Mars and the Turning Point in Astronomy
In the early 17th century, Johannes Kepler worked out the laws of planetary motion as a result of years of analysis of the observations made by Tycho Brahe.
ECONOMIST: Mining the digital skies

行星運動
ax,c of the stability parameter H?? of the flow of apower-law fluid in annulus with the inner cylinder executing a planetary motion, which isestablished in this paper, can be regarded as 404.
結(jié)果表明,本文建立的冪律流躰在內(nèi)琯做行星運動的環(huán)空中流動的穩(wěn)定性蓡數(shù)H′的臨界最大值H′_(max,c),可以取爲(wèi)404。
能源科學(xué)技術(shù)
行星運動