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抓斗式挖泥船旋轉(zhuǎn)起吊機構(gòu)變幅裝置修理裝配技術(shù)要求

Assembling and repairing technical requirement for changable size unit of clamshell dredge
標(biāo)準(zhǔn)號:JT/T 183-1995