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planetesimals 英p'lænɪtesɪməlz美p'lænɪtesɪməlz COCA⁵⁸⁵⁹¹BNC¹⁴⁴⁶⁶⁴⁺³Economist⁵³⁵⁸¹⁺¹
基本英英例句例句
星子¹⁰⁰原型planetesimal的复数
名词 planetesimal:
one of many small solid celestial bodies thought to have existed at an early stage in the development of the solar systemThe fragments may well have been primordialplanetesimals, according to Weaver.维沃认为，这些碎片是最原始的星子。
Theplanetesimalsaccretions of the Earth obviously have two stages, including initial accretion and late accretion.这种不均一性起源于前地球阶段堆积星子的不均一性。 The “ planetesimals” would slowly collide with each other and become more massive.
微型行星会慢慢互相碰撞而增加重量。 yeeyan
Carbonaceous chondrite planetesimals were adsorbed on the mantle surface of the primitive earth, forming primitive carbon-rich areas.
碳质球粒陨石星子被吸积于原始地球上地幔表层，形成原始富碳区。 cnki
Other particles within the disk collided and stuck together to form asteroid- sized objects named as planetesimals, some of which combined to become the asteroids, comets, moons and planets.
其它在盘状星云中的物质相互碰撞合并，形成小行星尺寸的星体，称为“星子”，一些星子相互结合，形成小行星、彗星、卫星和行星。 yeeyan
Over time, the particles clumped together, growing faster as they collided and stuck together in larger clumps called planetesimals.
随着时间的推移，这些颗粒凝集在一起。它们碰撞后结合成更大的称为星子的块状，增长速度也随之加快。 hotdic
Part of such planetesimals entered the asteroid region, drew out most of the matter there, and increased the random velocity of the asteroids that remained, so they could not combine to form a planet.
一部分大星子进入小行星区，拉走了大部分物质，增加了留下的小行星的随机速度，使该区内形成不了大的行星。 cnki
Planetary embryos are believed to form out of kilometer- sized planetesimals that attract each other gravitationally and collide.
据信，行星胚胎最终形成直径达到数公里的小行星，这样就能在相互之间产生重力吸引力，最终产生碰撞。 lfx8.com
The idea that trace amounts of water in planetesimals could give rise to vast oceans may seem far- fetched until one considers how small an ocean can be relative to the size and mass of a planet.
星子中微量的水造就了宽阔的海洋这一观点也许看起来不切实际直到人们认识到相对于一颗行星的质量和体积，浩瀚的海洋是多么的渺小。 yeeyan |