研究了硼砂盐浴渗铬和氯系熔盐渗铬.It was investigated that chromizing in borax salt bath and melting hydrochloride.而且浇注温度越高, 铸渗铬合金层越厚.The higher casting temperature, the thicker castchromized alloy layer.研究了铸铁表面铸渗铬合金层形成过程.The forming pro...
Lots of pubs like to deck themselves out with flowers in summer.夏日里有许多酒吧喜欢用鲜花来装饰店面。Why do we pay to overheat pubs and hotels?为什么我们要为酒吧和宾馆不必要的暖气开支买单呢？Pubs are dirty, smelly and unfriendly, according to the Good Pub Guide....
Sitting pole-axed on the sofa, Mahoney stared in astonishment at the spectacle before him.马奥尼不知所措地坐在沙发上，吃惊地盯着眼前的景象。We were all absolutely pole - axed by the terrible news.那可怕的消息传来,我们都吓得不知所措.The heavy oaken furniture had ...