锌基合金的压铸件总是在氰化镀液中镀铜.Zinc base die castings are always copper plated in cyanide baths.简要回顾了无氰碱性镀铜的发展历史.The development history of cyanide - free copper electroplating is briefly reviewed.指出了普通镀铜工艺的缺点.The disadvantages of c...
HDTV is especially useful if there are a lot of special effects.有很多特效的时候，高清电视就格外有用了。But by the mid to late '90 s, HDTV should be an emerging consumer product worldwide.但是,到九十年代中期或后期, 高清晰度电视就会在世界范围内成为一种新兴的消费品.HDTV pr...
She talked to the stranger while walking, as if absentmindedly.她边走边应酬着那位生疏人, 似乎是心不在焉.Poor posture, sitting or walking slouched over, compresses the body's organs.坐着或者走路的时候低头垂肩，这种不正确的姿势会压迫体内的器官。We've arranged a ...
Before the race, he is fine. But afterwards he is worn out.赛前他状态很好，赛后就筋疲力尽了。She wondered where they were going to rendezvous afterwards.她想知道之后他们要去哪里约会。Shortly afterwards, cuts in defence spending forced the aerospace ind...
That's where the shoe pinches.那就是困难所在.The shoe pinches me.这鞋太挤脚.The coach said he wasn't worried about any position except quarterback; that was where the shoe pinches.教练员说除前场与中场的位置以外,他不担心其他别的位置; 前场与中场的位置是困难所在....