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- A terrestrial planet with a thin atmosphere, Mars has surface features reminiscent both of the impact craters of the Moon and the volcanoes, valleys, deserts and polar ice caps of Earth. 地面星球与薄的气氛中,火星表面特征想起这两个冲击环形山的月亮与火山,峡谷,沙漠和极地冰盖的地球。
- Earth is the most massive of the terrestrial planets. 地球是类地行星中最大的一个。
- Stefan finds it intriguing that infrared interferometry already enables us to investigate the disk structure in the terrestrial planet forming zone where planetary systems are just forming. 斯蒂芬认为,耐人寻味的红外干涉已经使我们能够研究硬盘中的结构形成的陆地区域内行星的行星系统只是形成。
- Inserting another Earth-mass planet in the present-day space between the terrestrial planets would destabilize them all. 假如把另一颗地球质量大小的行星摆进今天类地行星间的空间里,将会破坏整个系统的稳定性。
- Tiny, distant, Pluto has a solid but icier surface than the terrestrial planets. 相对较小、距离太阳遥远的冥王星虽然有着坚硬的表层,但表面温度和近地行星相比则要低得多。
- Than Etzioni said: "We have found that standing on the edge of the terrestrial planets. 比奇奥尼说:“我们已站在发现类地行星的边缘。”
- NASA probe of the three major goal is to detect the earth outside world, the three planets has an ambitious goal, search terrestrial planets. 美国宇航局三大探测目标就是探测地球之外的世界,这三大行星都有宏大的目标,搜索类地行星。
- Terrestrial planets could reside inside the innermost asteroid belt as well, though there currently is no clear indication of that, Marengo said. 马伦果说,尽管还没有明确的证据,但是最内侧的小行星带内部也可能存在类地行星。
- Its density is roughly 2.3 Times that of water. Usually, the Jovian planets have density less than 2, while terrestrial planets have density more than 5. 冥王星的密度约为水的2.;3倍通常来说;类木行星的密度会小于2;而类地行星的密度则大于5。
- One of the four major planets, Jupiter, Saturn, Uranus, and Neptune, which have very large masses and are farther from the sun than the terrestrial planets. 木星:四大行星,即木星、土星、天王星、海王星中之一,质量很大,比起类地行星来离太阳更远
- They may have been a source of part of the atmosphere of the terrestrial planets, and they are believed to have been the planetesimal-like building blocks for some of the outer planets and their satellites. 他们本来可能是地球行星大气层的来源之一,而目前的说法一直是他们是类星子堆积块,由一些外部行星和他们的卫星所造成。
- Generally, among the terrestrial planets the Earth and Venus characterized by the haviest mass, highest escape velocity, tied up much more gases which are more complicated in components and higher in density. 在类地行星中 ,地球和金星质量最大 ,逃逸速度最大 ,可将更多的气体“束缚”在它们表面 ,因此它们的大气有着复杂的组成和较大的密度。
- Saturn is the planet sixth in order from the sun. 土星是依次离太阳的第六颗行星。
- Mars is the fourth planet in order from the sun. 火星是太阳系的第四颗行星。
- An evil influence of a star or planet. 恒星或行星邪恶的影响
- Although they can swim, the polar bears are terrestrial animals. 北极熊虽然会游泳,但也是陆栖动物。
- The satellite of Neptune that is third in distance from the planet. 海王卫二海王星的卫星,离该行星的距离处于第三位
- The satellite of Saturn that is fifth in distance from the planet. 埃庇米修斯距离土星第五远的土星卫星
- A terrestrial globe is one that represents the earth. 地球仪是表现地球的器具。
- The satellite of Uranus that is second in distance from the planet. 天卫一距离天王星第十四远的天王星卫星