3557| 5
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外徑180,,壁厚5的錫青銅襯套壓入外套(45#)中,,采用幾級配合? |
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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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