混凝土轨枕 meaning in Chinese

concrete sleeper
concrete tie

Prestressed concrete sleepers - post - tensioning type
预应力混凝土轨枕.后拉伸型
Prestressed concrete sleepers - pretensioning type
预应力混凝土轨枕.预拉伸型
Prestressed concrete sleepers - rail fastenings
预应力混凝土轨枕.铁轨紧固件
Steel wire , deformed for prestressed concrete railroad ties
预应力混凝土轨枕用变形钢丝
Verification regulation for 500kn concrite sleeper staticloading test machine
500kn混凝土轨枕静载试验机检定规程

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