4453| 6
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球閥的區(qū)別,,ball valve 和globe valve ---請教 |
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為什么硬密封的球閥這么難壓
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回復(fù) 3# 的帖子
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小黑屋|手機版|Archiver|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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