詞語:protostellar
protostellar的解釋
protostellar[,prəutəu'stelə]adj.【天文學】原恆星的;形成(或引起)恆星的
protostellar的意思
protostellar cloud 原恆星雲;
protostellar的參考例句
1.A large cloud of gas and dust begins to congeal gravitationally, starts rotating, and eventually flattens into an object called a protostellar disk. 由氣體和塵埃構成的巨大雲團在引力的作用下開始凝縮,並且開始旋轉,最終變平成為平面狀物體,這種物體被稱為原恆星盤。
2.The absence of protostellar cloud material and the low velocity of the stars shows they could not have been born relatively recently or sailed in from elsewhere in the galaxy. 星系中缺少原恆星物質雲團,而且其中的恆星運轉速度低,說明恆星不可能是在最近誕生的,也不會是從星系的其他地方飄然而入。