black concentration信息详情
黑色浓度
concentration───n.浓度；集中；浓缩；专心；集合
impurity concentration───[电子]杂质浓度
high concentration───高浓度，高强度
concentration curl───[体]单臂哑铃弯举
concentration camps───n.集中营( concentration camp的名词复数 )
concentration ratio───集中度；浓度比率
concentration formula───浓度公式
concentration units───浓缩装置
concentration music───专注音乐
Most astrophysicists accept that this is the case, since according to general relativity, any concentration of matter of sufficient density must necessarily collapse into a black hole.───大多数天体物理学家接受这个情形，自从依照广义相对论，充份密度物质任何集中一定必然坍缩为一个黑洞。
Most astronomers believe that the large concentration of mass at the galaxy's center is a black hole whose gravity is causing the gas to whirl.───大多数天文学家认为，星系中心的大量物质是一个黑洞，它的引力导致气体旋转。
A black hole is a concentration of mass great enough that the force of gravity prevents anything from escaping from it except through quantum tunneling behavior.───一个黑洞是物质浓缩到足够大的以致引力除了通过量子隧道行为之外阻止任何东西从它那里逃逸。