14460| 21
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這東西是否用粉末冶金制造? |
點評
粉末冶金零件不是澆鑄而是燒結(jié)出來的。
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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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