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....
Instructors decided he would never make a pilot.教练断定他永远也当不了飞行员。The instructors were slacking on the job.教员们对工作松松垮垮.Do you intend to employ hostesses , hostess leaders, dancing partners, dancing instructors?你是否打算聘请女招待、女招待...
He was aged between 25 and 30, with a medium build and collar-length mousy hair.他年龄在25至30岁之间，中等个，灰褐色的头发长至衣领。He was average height, average build, with mousy hair and a forgettable face.他中等身高、中等身材、灰褐色头发，长着一张过目即忘的脸。The mou...
我们必须根据校规施予纪律行动.We all have to disciplinary action according to law.全身麻醉应在手术前或手术过程中施予.A general anesthetic is given before or during surgical procedures.因此由慈善施予所带来快感是有生理学依据的.Thus the warm glow that accompanies charitable ...