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活塞桿在裝配試壓運(yùn)行時(shí),表面出現(xiàn)一條或多條線紋拉痕 |
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Archiver|手機(jī)版|小黑屋|機(jī)械社區(qū) ( 京ICP備10217105號(hào)-1,京ICP證050210號(hào),浙公網(wǎng)安備33038202004372號(hào) )
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