The water treatment agent ferrate is prepared by electrolysis in diaphragm bath with double cathode chamber and porous cylinder cast iron anode.
采用双阴极室隔膜电解槽，以多孔圆筒铸铁为阳极电解制备水处理剂高铁酸盐。
Pesticide-Resistant coating by roasting in fluidized bed for aluminium cast of piston-diaphragm pumps is discribed.
本文是沸腾床热熔敷法对活塞隔膜泵铸铝工件耐农药涂装的初步总结。
The span between two such diaphragm walls can easily be bridged with precast reinforced concrete beams or a cast in-site reinforced concrete slab to complete the main shell of the tunnel.
使用预制钢筋混凝土梁或者现浇钢筋混凝土板会很容易将两侧地下连续墙的跨度空间连接起来，从而完成隧道的主壳。
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