护轨;
Oversize stresses will cause the rail bent or ruptured , which seriously influence the safety of railroad.
过大的温度应力会导致钢轨变形,威胁到列车的运行安全.
He was holding the concrete safety rail with an unsteady hand.
他用那颤抖的手扶着混凝土栏杆.
The vibration of roadbed and rail is key to the safety of the running train.
路基与铁轨的振动问题是铁道保障行车质量的关键问题.
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