The Pre - cambrian alumino - siliceous slate is the host rock of antimony deposit inHunan.湖南前寒武系的 硅铝 质板岩是锑矿主要赋矿岩性.Antimony adds to the rigidity of the casting.锑能增加铸件的硬度.Antimony abounds in out country.我国盛产锑.The percentag...
The percentage of antimony may be left to the battery manufacturer.锑的百分含量由各蓄电池生产厂自己掌握.Antimony abounds in out country.我国盛产锑.Antimony adds to the rigidity of the casting.锑能增加铸件的硬度....
Their mother does not buy the picture - story book for them.他们的母亲没给他们买小人书.I like to curl up with a story book.我喜欢蜷曲而卧着看故事书.The child pasted a coloured picture in his picture - story book.这孩子用糨糊把一张彩图贴在他的小人书里了....
本文研究了V波段四倍频器的设计和研制方法.This thesis presents the design and manufacture of a V - band frequency quadrupler.这种倍频器可以满意地用作为某型测速雷达的输出级.This frequency multiplier may be used satisfactorily as the output stage some velocity radar...
需高效能的印刷油墨,并带有颜色, 网板及线性操作.Speed and High efficiency inking with color, Halftones and line works.专用网板印刷 、 展板, 彩色标志、标牌,电脑刻字.Advertising : professional screen printing, board, color sign , signboard and computer lettering.广告...