Causes for the corrosion leakage of interstage coolers of a chlorine gas compressor were analyzed.分析了氯气压缩机段间冷却器腐蚀泄漏原因,介绍了超声波防垢原理及其实施效果.The paper also points out the condition of the best interstage of the forging.并指出了最佳锻...

upstages的音标：...

大阶段...

n.舞台内部，舞台后面...

adj.台上的，台上演出的adv.上台，上场...

They expected a reciprocal gesture before more hostages could be freed.在更多人质获得自由之前他们期望看到对方也有相应的表示。His release turned out to follow the pattern set by that of the other six hostages.最终他的获释方式也和其他 6名人质的获释如出一辙。There were fea...

v.抢…镜头，使相形见绌( upstage的过去式和过去分词 )...