1.It had been proved that the curvature tensor is a curl(grad),not zero except in Eucldean space,and so discovered the essence of Bianchi identity:div(rot(grad))=0,the curvature,forming tube field,is invariant along the tube,i.
证实 :曲率它正是非欧氏空间不为零的梯度的旋度 . 并发现 :Bianchi等式实质是div(rot(grad) ) =0 ,曲率形成管形场 ,沿管不变 .
3.Sarah:I must be 2)psychic. So you think Candy will get through grad school?
莎拉：我一定是会通灵。那麽你觉得凯蒂会念完研究所吗？
4.This paper introduces a method of quickly and simultaneously calculating grad ual change figure area by using CCD as a receiving device.
介绍了一种以CCD作为接收器件，快速实时计算变化图形面积的方法。
5.In Hong Kong I had seen a streetcar conductor following a free rider to the street and grad hold of his necktie， in place of the pigtail which used to be the first thing reached for in a brawl.
我在香港的时候曾看到过一个巴士售票员追揩油搭便车的家伙，一直追到街上，抓住那人的领带——有辫子可抓的时代已经结束了。
6.The stator is composed of laminations of high-grad sheet steel.
定子是由高质量的薄钢片叠制而成。
7.Engine：adopt good quality famous-brand engines, with IP54 pretection grade, F grad isolation, smooth lubrication and high efficiency, which could also separately designed according to special requirements of users.
电动机：采用优质品牌电动机，防护等级IP54，绝缘等级F级，脂润滑，高效率，也可根据用户的特殊要求另行设计。
8.Kevin seemed too much the typical MIT grad: a true engineering at heart.
凯文看起来是个典型的麻省理工毕业生，甚至有点过头：一个真正的学工程的人。
9.Just before World War II,she married Philip Graham,a brilliant Harvard Law grad and Supreme Court clerk.
就在二战前夕，她嫁给了菲利普·格雷厄姆--一个才华横溢的哈佛大学法学院的毕业生，在最高法院任职。
10.RESEARCH ON THE DURABILITY OF THE GRAD ORDINARY STRENGTH ADDING CALCIUM FLY ASH CONCRETE
普通强度等级增钙灰混凝土耐久性研究
