发布时间:2025-02-01 15:02:34
大致的参考数据:
钨钴类硬质合金:14.4-15.8;
钨钴钛类硬质合金:11.-13.2。
我家住城边我家院子也很大虽然房子不咋样不过我准备在结婚之前装修我想即使房子看上去不怎么样
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