发布时间:2025-02-01 15:13:25
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。
而且是装修房子用说三个月内还还写借条他家里条件不错但这钱是我所
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