预应力混凝土轨枕 meaning in Chinese

prestressed reinforced 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
Standard specification for uncoated , stress - relieved steel bars for prestressed concrete ties
预应力混凝土轨枕用无涂覆应力消除钢棒的标准规范