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中國航空航天的切膚之痛,,高端軸承市場(chǎng)被國外巨頭壟斷,! |
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點(diǎn)評(píng)
哈哈,不過是在給自己貼金而已,。,。
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點(diǎn)評(píng)
嗯!我們國家的v3,,v4這個(gè)級(jí)別的軸承產(chǎn)量很�,。�
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小黑屋|手機(jī)版|Archiver|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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