小行星

In the case of the demise of the dinosaurs, scientists have a smoking gun, an impact crater that suggests dinosaurs were wiped out as the result of a large asteroid crashing into the planet.

至於灭亡的恐龙，科学家们有一个冒烟的枪，一个撞击坑表明恐龙的灭绝是由於一个大的小行星撞击地球。

It has no secular energy error for the integration of periodic orbits with constant time-steps. The upper bound of mass was given for an imaginary planet in the main asteroid belt with this scheme.

演化模型是太阳系N体模型(N=7)，即把水星、金星、地球的质量加到太阳上，忽略冥王星，同时在小行星主带附近增加一个天体，系统演化时间为一亿年。

The region of interplanetary space between Mars and Jupiter where most asteroids are found.

在太阳系内太空中火星与木星间的有很多小行星的区域。

According to the content of iridium also estimated the impact object is equal to the diameter of 10 km asteroid.

根据铱的含量还推算出撞击物体是相当于直径10公里的一颗小行星。

I also classify the irregulars," she says,"and in between I cruise the universe looking for asteroids and gravitational lenses.

我同样为不规则的星系分类，"她说，"我漫行在宇宙中，寻找小行星和扁豆状夹层。

Based on the scheme of exploration Ivar asteroid, this dissertation studied the mission planning technology and system design.

本文基于探测Ivar小行星的设计方案，对深空探测器自主任务规划方法和系统设计进行了研究。

Finally, taking the asteroid Ivar (numbered 1627) rendezvous mission as example, the results of methods are verified and investigated.

以1627 Ivar小行星的交会任务为例验证了该方法，其结果表明，采用混合搜索方法可以快速获得最优的星际转移发射机会。

The only way I know of dealing with this general human conceit is to remind ourselves that man is a brief episode in the life of a small planet in a little comer of the universe, and that for aught we know, other parts of the cosmos may contain beings as superior to ourselves as we are to jelly-fish.

我所知道的处理这种人类普遍具有的自负的唯一办法是提醒我们自己：人类仅是宇宙一角中一个小行星的整个历程中的一个短暂的插曲，也许，宇宙的其它地方可能有某种生物远胜于我们，就像我们远胜于水母一样。

The only way I know of dealing with this general human conceit is to remind ourselves that man is a brief episode in the life of a small planet in a little coner of the universe, and that for aught we know, other parts of the cosmos may contain beings as superior to ourselves as we are to jelly-fish.

我所知道的处理这种人类普遍具有的自负的唯一办法是提醒我们自己：人类仅是宇宙一角中一个小行星的整个历程中的一个短暂的插曲，也许，宇宙的其它地方可能有某种生物远胜于我们，就像我们远胜于水母一样。

The only way I know of dealing with this general human conceit is to remind ourselves that man is a brief episode in the life of a small planet in a little corner of the universe, and that for aught we know, other parts of the cosmos may contain beings as superior to ourselves as we are to jelly-fish.

我所知道的处理这种普遍的人类自负的唯一方式是，提醒我们自己，人类，只不过是环宇之中，一个小小角落里的一颗小行星上的生命的短暂章节，宇宙其他地方，别的生命优于我们就像我们优于水母，也未可知。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了