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GB/T 21479.1-2008 船舶與海上技術船用推進裝置第1部分:螺旋槳幾何學詞匯(求助) |
Archiver|手機版|小黑屋|機械社區(qū) ( 京ICP備10217105號-1,京ICP證050210號,浙公網(wǎng)安備33038202004372號 )
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