Thus i considered all my activities which my hands had done and the labor which i had exerted , and behold all was vanity and striving after wind and there was no profit under the sun 传2 : 11后来我察看我手所经营的一切事、和我劳碌所成的功谁知都是虚空、都是捕风、在日光之下毫无益处。
Suddenly he was discouraged . in that moment he suddenly saw himself as a complete failure for he had pushed the rock for years and he had accomplished nothing . the rock had never moved 他顿时感到很沮丧，他认为自己是彻底的失败，因为他推大石推了好几年，却一无所成，那大石从未移动过。
By the method of " every open set in r " is the union of an at most countable collection of disjoint connected open sets " , the paper deals with some problems of countability in real analysis 摘要以“平面上互不相交的若干开集所成之族至多可数”为基点，对一些相关结果给出了全新的直观化证明。
Then i looked on all the works that my hands had wrought , and on the labour that i had laboured to do : and , behold , all was vanity and vexation of spirit , and there was no profit under the sun 传2 : 11后来我察看我手所经营的一切事、和我劳碌所成的功谁知都是虚空、都是捕风、在日光之下毫无益处。
This controller both distributes load to all robots by given proportional and optimizes torque , solving some defaults of existing controllers which are designed , omitting loading capacity of each robot ; 3 对具有参数不确定性的多个机器人所成的系统，分别研究了冗余及非冗余的机器人系统，给出了其对应的控制器。
The invariant ( v ( a ) , [ 1a ] ) that we used for unital case is the semigroup of murry - von neumann equivalence classes of projections in matrices over c * - algebras together with the class of the unit 我们用来分类的不变量( v ( a ) ， [ 1 _ a ] ) (有单位元的情况)是a的矩阵代数中所有投影的murry - vonneumann等价类所成的半群及单位元所在的等价类。
These technicians can safeguard the online security and play an important role for ensuring the normal running of company internal network . as participating in work as soon student from computer science , network technology succeed knowledge that must know 本文的主要内容是《网络协议仿真教学系统》 ,该系统由《网络协议仿真》和《网络协议分析》两部分所成。
Six distinguished computer experts including scott defined the weight of continuous lattices in the first reference and proved that the three kind of weights ? ei g ht of continuous lattices , weight of the related scott topological space and weight of the related lawson topological space , are consistent 证明了几类分配的domain范畴即sdscs 、 sdccs 、 sdacs是slp的闭的满子范畴，指出在slp的满子范畴中指数对象同构于稳定映射所成的函数空间。
