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請教大家,這個(gè)線輪廓度后面跟著是什么意思,只知道這是關(guān)于紡織品要求的標(biāo)法》》》》 |
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Archiver|手機(jī)版|小黑屋|機(jī)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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