梯级橡胶坝由4座单跨充水枕式橡胶坝组成。
The cascade flexible dam consists of 4 single spans Water filling, and pillow-type flexible DAMS.
对209P型客车转向架摇枕安全吊座断裂原因进行了分析，并提出了改进建议。
The causes to breaking of bolster safety hangers on 209P passenger car bogies are analyzed, and suggestions for improvement are given.
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