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....
面心立方(FCC)及六方最密(HCP)结构金属中的差排结构将有较详细的描述.Dislocation structures in FCC and HCP metals are described in some detail.本文用赝势方法计算了铅的面心立方结构和金刚石结构的晶体总能,讨论了两种结构在高压下的稳定性.Using pseudopotential method, we calculated the crystal energy...
经过3个周末的追求之后，帕梅拉接受了伦道夫的求婚。After a three-weekend courtship, Pamela accepted Randolph's proposal of marriage.不如咱俩这个周末出去度假吧？Why don't you and I go away this weekend?该农场仅在两个周末接待日才对公众开放。The farm is open to the public...
You have to learn to take care of your possessions.你得学会保管好自己的财物。Don't worry yourself about me, I can take care of myself.你别担心我，我能照顾好自己。I take care of them to the best of my abilities.我尽我所能地照顾他们。...