protostar

美 　英

• n.〔天〕原恒星
• 網(wǎng)絡(luò)星空戰(zhàn)機(jī)；戰(zhàn)斗空形戰(zhàn)；流星

詞形變化

復(fù)數(shù)：protostars  

英漢解釋

n.

1. 〔天〕原恒星

英英解釋

n.	1. an interstellar cloud of gas and dust thought to develop into a star when it has collapsed sufficiently for nuclear reactions to begin

例句

The conditions in a protostar resemble far more closely in situation in red giants, most of whose volume is caught up in stormy convection .

原恒星的條件更加類(lèi)似于紅巨星的情形，紅巨星體積的大部分都卷入劇烈的對(duì)流中。

It was compressed enough to become a protostar but enough material was left over to form planets, moons, asteroids and comets.

壓力足夠使之形成一顆恒星，剩下的物質(zhì)形成了行星，衛(wèi)星，小行星和彗星。

The embryo inside the protostar is less massive than the envelope; most of the mass is still falling inward.

原恒星內(nèi)部的胚胎的質(zhì)量比包殼小，大部分物質(zhì)一直在朝中心落去。

Models of protostar also show that they will have

原恒星的理論模型顯示它們會(huì)有