青年中文black concentration的意思
black concentration中文翻譯：
黑色濃度
concentration───n.濃度；集中；濃縮；專心；集合
impurity concentration───[電子]雜質濃度
high concentration───高濃度，高強度
concentration curl───[體]單臂啞鈴彎舉
concentration camps───n.集中營( concentration camp的名詞復數 )
concentration ratio───集中度；濃度比率
concentration formula───濃度公式
concentration units───濃縮裝置
concentration music───專注音樂
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.───大多數天體物理學家接受這個情形，自從依照廣義相對論，充份密度物質任何集中一定必然坍縮為一個黑洞。
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.───大多數天文學家認為，星系中心的大量物質是一個黑洞，它的引力導致氣體旋轉。
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.───一個黑洞是物質濃縮到足夠大的以致引力除了通過量子隧道行為之外阻止任何東西從它那里逃逸。