| 1. | Applications to physics : the oscillator and planetary motion 物理上的应用:谐振和行星运动。 |
| 2. | An exhibit on celestial mechanics demonstrates the laws governing planetary motion 其中一座有关天体力学的展品,会示范支配行星运动的定律。 |
| 3. | The secondary flow in newtonian fluid flow in annulus with the inner cylinder executing a planetary motion 流体在内管做行星运动的环空中流动的二次流 |
| 4. | Normal stress distribution on the inner cylinder forced by power law fluid flowing in annulus with inner cylinder executing a planetary motion 幂律流体在内管做行星运动的环空中流动时的内管法向应力分布 |
| 5. | Mathematics has solved problems in nature for centuries . the ancient egyptians used geometry to survey their landscape . isaac newton developed calculus while describing planetary motion 数学长久以来解了许多大自然的难题。古埃及人利用几何学勘测地形,牛顿也在描述行星运转的过程中发展出微积分的概念。 |
| 6. | 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) 。 |
| 7. | Here we assume planets move in circular motion at constant speed , and the synodic periods given above is just an approximate value . actually the planetary motion is full of small variants , and the synodic period values are irrational number . the quotient of two irrational numbers cannot be written as a fraction 最新的消息是,在2000年10月后的六星期内,竟然一口气为土星多发现10颗卫星,让它在刹那间重新超越天王星,成为最星多势众的行星,现在土星有28颗卫星,遥遥领先只有21颗卫星的天王星,木星的卫星数目为18颗,而第四位的海王星则只有8颗。 |