The displacement of different cathodes increases, and the maximal thermal stress decreases.炭块的位移增大, 而炭块内的最大热应力有不同程度的降低.Applied for marking filament, cathodes, setting rod at H . t, electrode etc.用于制作灯丝, 发射阴极,高温定型杆, 电极等.F...
简要介绍以此类方法对合成苯甲醛的研究.Based on the reactions , this paper reports research for synthesizing benzaldehyde.再溴代得到2-溴 -4,5-二甲氧基苯甲醛,收率为91.9%,并分析溴代过程中甲酰基的邻位效应及溴代产物的稳定性.This product with Br 2 was obtained 2 - bromo - 4,5 - hydroxy...
The system precisely calibrates all of your CRT, LCD, and laptop displays.该系统精确地测定你的CRT 、 LCD和笔记本电脑显示器.Locates the set in advance, calibrates the world, the drift angle.预先定位套准,校准天地,斜我的偏差使整套图案位置准备, 一线不差.After the top is b...
陆上油田an onshore oil field保护油田者有奖.Those who protect the oil field will be rewarded.新油田的含油层结构已经探明.The oil - bearing structure of the new oil field has been verified....