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PHC pipe pile plank in end is usually produced by cutting steel plank or forging, and then machining.
PH C管桩端板的通常生产方法是采用钢板切割或锻打成型,然后机加工而成。
youdao
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PHC pipe pile plank in end is usually produced by cutting steel plank or forging, and then machining.
PH C管桩端板的通常生产方法是采用钢板切割或锻打成型,然后机加工而成。
youdao