14571| 21
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這東西是否用粉末冶金制造? |
點(diǎn)評(píng)
粉末冶金零件不是澆鑄而是燒結(jié)出來(lái)的。
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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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