Heatproof silastic sealed ring, non - aging and good sealing property.耐热硅橡胶密封圈, 不易老化,密封性能好.Electronics stepless speed regulation , conveyor utilized rotated bar with heatproof tube.电子无级调速, 输送机构采用自转式输送棒并加耐高温套管.Heatproof e...
金矿的主要载金矿物分别为:毒砂 、 磁黄铁矿 、 黄铁矿 、 方铅矿和闪锌矿.The main gold bearing minerals include arsenopyrite, pyrrhotine, pyrite, galena and sphalerite.与黄药相比,乙硫氮是方铅矿更好的选择性捕收剂.Diethyldithiocarbamate was more better selective collector than...
学了微积分之后,你们就能够解这些数学题了.After studying differential calculus you will be able to solve these mathematical problems.综上所述就导出了微积分学中的最基本的定理.All this leads up to the most fundamental of theorems of calculus.对于这一题,微积分一点也用不上.This ...
We had a nice meal with a bottle of champagne.我们美餐了一顿，还喝了一瓶香槟。Eugene was concocting Rossini Cocktails from champagne and pureed raspberries.尤金当时正在用香槟和覆盆子酱调配罗西尼鸡尾酒。A moment or two later champagne in an ice-bucket material...
This painting points to another recurring theme in Munch's work.这幅画体现了蒙克作品中另一个常见的主题。There is the source of the recurring pestilence.那里是一再发生瘟疫的策源地....a recurring nightmare she has had since childhood.一个从她童年起就不断出现的噩梦H...