13991| 6
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何為冷激鑄鐵,,比其它的鑄鐵有哪些優(yōu)勢? |
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不知道這里的硬度為什么要用HS(肖氏)
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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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