The affair began when customs officials inspected a convoy of 60 tankers...就在海关关员检查一个60艘油轮的船队时，事情发生了。Suspected insurgents ambushed a NATO convoy in southern Afghanistan overnight Monday.周日晚,疑似武装份子在阿富汗南部埋伏了北约的一支车队.He orde...
The EP antiwear property is different that it contains different additives.不同的添加剂配伍,聚脲润滑脂的极压抗磨性也不一样.The antiwear & friction reducing mechanism of nano materials was summarized.综述了纳米材料的 抗磨 减摩机理.The antiwear hydraulic oil ...
解释为什么钡能形成过氧化物而铍则不能。Explain why barium forms peroxide but beryllium does not.然而铍的毒性限制了它的作用.However the toxic properties of beryllium limit its application.但如果用铝包覆铍,则可避免加工过程中及储存期间的中毒问题.Toxicity problem in manufacturing and...
Don't hang up!别挂电话！He's got a real hang-up about his height.他为他的身高很是苦恼。You hang up hurriedly and attend to baby, crockery, etc.你慌忙挂上电话,去照料孩子, 去收拾陶器, 等等....