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- sun and planet gear 行星齿轮装置
- By gravitation the sun and planets act and react upon one another. 太阳与行星通过引力发挥作用并相互影响。
- Mag. is the apparent visual magnitude of the planet, and Solar Elong gives the elongation or angle between the Sun and planet. Mag.;是行星的视星等,SolarElong是太阳和行星之间的角距离。
- So our body contains universes too. There are sun and planets in our cells. 我们的身体里也有宇宙。我们的细胞里也有太阳和行星。
- The sun and moon, stars and planets sweep daily from the eastern horizon to the western horizon. 太阳和月亮、恒星和行星每天从东方地平线向西方地平线掠过。
- The earth, sun and moon are spheres. 地球、太阳和月亮都是天体。
- The sun and the planets are heavenly bodies. 太阳和行星都是天体。
- In the Ptolemaic system of planetary motion the earth is fixed as the center of the universe with the sun and moon and planets revolving around it. 在托勒密的行星运动体系里,地球是固定的,是宇宙的中心,太阳、月亮和其他行星都绕着地球转。
- Our own sun and planets are constructed from similar debris of supernovae that exploded in the Milky Way billions of years ago. 我们的太阳以及行星也是由数十亿年前银河系中的超新星爆发后的残骸所构成。
- Only after large bodies such as the Sun and planets congealed did there exist the extremes of temperature and pressure required to forge a large diversity of mineral species. 矿物的演化和达尔文的演化很明显是不同的,因为矿物不会发生变异,繁殖或者完全和生命物质一样。
- Before the formation of the sun and planets, all the chemical elements found on the periodic table were floating around in the primordial dust of the Solar System. 太阳系形成前,太阳系的原始尘埃中漂浮着元素周期表中列出的所有化学元素。
- The sun and the moon are often personified in poetry. 诗歌中常把日、 月拟人化。
- We're going to lie in the sun and roast for two weeks. 我们打算躺著晒太阳,晒上两个星期。
- Fitness clothes by Bia Brazil, BlueFish and Planet Body. 网站简介:Women s exercise clothing and workout wear.
- The sun and the moon is often personify in poetry. 诗歌中常把日、月拟人化。
- We know that the universe is filled with stars and suns and planets and systems. 我们知道宇宙充满了各种恒星、行星、各种星座、星系。
- Sun gear and planet gears 太阳齿轮和行星齿轮
- This paper introduced the production process of an inner tooth ring in tractor planet gear mechanism. 摘要介绍在普通设备上实现拖拉机行星齿轮机构中内齿圈的加工工艺。
- The glare from the sun and snow blinded him. 眩目的阳光和白雪刺得他睁不开眼睛。
- The real-time meshing stiffness of arced planet gear and the meshing stiffness of involute planet gear have mainly been analyzed. 摘要主要分析了圆弧行星齿轮的时变啮合刚度和渐开线行星齿轮的啮合刚度。