He was an experienced parachutist who had done over 150 jumps.他是个经验丰富的跳伞者，已经跳过150多次伞了。A daredevil parachutist jumped from the top of Tower Bridge today.一位大胆鲁莽的跳伞者今天从伦敦塔桥的桥顶跳了下去。The parachutist floated gently down to eart...
重铬酸钾溶液的浓度大 、 游离酸多, 动物胶质的不同, 也都会加还无 光硬化.Drchromate solution megasporogenesis, free acid concentration, animal glial, also by also non - light - hardening .神经胶质的组织是大部分脑部肿瘤生成的地方.The gluier glial tissue is where prestige per...
铜焊, 铝焊, 各种五金产品等.Copper welding, aluminum welding, all kinds of hardware products.刀头的刀柄和刀头分开使用铜焊焊接, 容易更换刀头.Blades and segments are welded by braze, which facilitate change of segment.将铜焊线或铜焊条按在插入阀门承插口的管道线上.Apply brazing w...