随着离开太阳的距离增加，阳光强度呈指数级下降，因此一颗距离太阳比地球近一倍的行星所接受到的阳光远远不止地球所接受到强度的一倍。
Light falls off exponentially with distance, so a planet that is, say, twice as close to the sun as Earth is would get much more than twice the solar energy.
我们也同样擅长于发现那些一大堆的尘埃...但是如果要去发现那些毫米级的尘埃，和那些我们能看到的最小的行星，我们几乎就成了盲人。
We're also good at seeing big clouds of small particles of dust. ... But in between dust grains up to a millimeter in size and the smallest planets we can see, we're blind.
这两张望远镜彩色照片拍到了两个宇宙级夜枭，两个行星状星云向行星地球反射强光形成了有趣的对比。
Captured in colorful telescopic portraits, two cosmic owls glare back toward planet Earth in this intriguing comparison of planetary nebulae.
最老的已知行星是一颗比地球早形成80多亿年，宇宙大爆炸20亿年后形成的太古级的127亿岁的行星。
The oldest known planet is a primeval world 12.7 billion years old that formed more than 8billion years before Earth and only 2 billion years after the Big Bang.
这样的预测令人担忧，这是在评价近地天体（NEO）撞击危险程度的 “托里诺分类表”（THETORINOIMPACT HAZARDSCALE）中第一次有小行星进入“4级”（译注：该分类表最高为10级）。
This estimate was alarming; it was the first time an asteroid had been promoted to "Level 4" on the Torino Scale -- a near-Earth object (NEO) impact hazard categorization method.
建立了单级2k - H直齿行星传动的纯扭转集中参数动力学模型。
A simplified purely torsional concentrated parameter model of a single stage 2k-h spur planetary gear transmission (PGT) is developed.
首先，将自己的船升到第15级，然后拓殖行星。
First, upgrade your hull to level 15, then colonize a planet.
该减速箱采用两级行星齿轮传动，具有结构紧凑、体积小、重量轻、传递扭矩大等特点。
This reduction gearbox is driven with the two-stage planet gears, and features compact structure, small volume, low weight and great transmission torque etc.
传动比变化范围大，特别是采用行星传动时，传动比可到100 ~ 200(单级)，适用于减速或增速传动。
Change gear ratio range, in particular, using planetary transmission, the transmission ratio can be up to 100 ~ 200 (single stage), the growth rate for slow down or drive.
根据月球研究和行星际飞行任务的需要，为了提高火箭的推重比，要为运载火箭新安装一个第三子级。
Missions for study of the Moon and interplanetary flight required re-equipping the launch vehicle with a third stage to increase its power-mass characteristics.
它于1977年启用，1999年升级完毕，现在装备着全球最好的系外行星搜索利器——高精度径向速度法系外行星探测器（HARPS）。
Equipped with HARPS, the best exoplanet finder in the world, the ESO 3.6-metre telescope was commissioned in 1977 and completely upgraded in 1999.
以微米级海水珍珠层粉为原料，用行星式球磨机制备纳米珍珠层粉。
Using seawater pearl layer powder as raw material, nanometer pearl layer powder can be prepared by Planet-Ball-Grinding machine.
在使用过程中曾出现两次不能转动的故障，两次故障都是一级行星机构损伤严重。
A planetary body is serious injury in two can not be turned failures which appeared in the course of using. The design flaws is found from gear design parameters start.
在使用过程中曾出现两次不能转动的故障，两次故障都是一级行星机构损伤严重。
A planetary body is serious injury in two can not be turned failures which appeared in the course of using. The design flaws is found from gear design parameters start.
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