Meanwhile, the Drazin inverses of PQ and P - Q are established.同时, 给出正交投影的积PQ和差P -Q 的Drazin逆的表达式.In this paper, we investigate the Drazin inverse of a morphism in additive category.本文研究了加法范畴上态射的Drazin逆....
She has a theory that drinking milk prevents colds.她有一种说法,认为喝牛奶能防止感冒.Ordinarily, random thermal jigging of the molecules prevents sound waves from behaving analogously to light quanta.通常, 分子的随机热运动,会让声波的行为和光量子有别.The indem...
简老是惹她生气，她有时就拿我出气。Jane's always annoying her and she takes it out on me sometimes.“瞧，又来了不是？又惹孩子伤心！”雪莉说。"There you go again, upsetting the child!" said Shirley.那张咖啡桌是玻璃的，为的是尽量不惹眼。The coffee-table is glass, to be as un...