我们想跟孩子们一起制作硫酸铜晶体。We tried to grow some copper sulphate crystals with our children.硫酸铜具有防腐性,这是不曾有过问题的.The antiseptic properties of copper sulphate have never been questioned.铁或钢放入硫酸铜中,也会生成疏松的浸镀层.Iron or steel placed in co...
填土的渗漏可能污染地下水和地面水.Seepage from land fills can pollute ground water or surface.紫山灰场粉煤灰作为一种冲填土,粒度细,似粉砂.Pulverized coal ash is hydraulically filled on ground of Zishan.大家抓起铁锹,开始往井里填土.We grabbed shovels and began to fill the ...
The paper emphatically introduces the working principle of functional units of flameproof intelligent soft - start switch.本文着重介绍隔爆智能软起动开关各功能单元的工作原理.The workers are in flameproof overalls.工人们穿上防火工装裤....a flameproof casser...
Your native teachers are mere propagators of degeneracy.你们的那些土里土气的教师就不过是退化了的传播者而已....a region that had become a byword for violence and degeneracy.成了暴力和堕落代名词的地区He would consider such cavorting by his son Freddie , two gi...
Wages have fallen by more than twenty percent during the past two months...在过去的两个月里，薪资降幅超过 20%。She hung on as the freezing, rushing water cascaded past her...她抓得紧紧的，任凭冰冷湍急的水流从她身上倾泻而下。This is to help her to come to terms ...