发布时间:2025-02-01 15:09:18
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。
墙体拆除 11层小高层不清楚是什么结构买的4层现想装修想问下梁下的墙能否拆除墙厚20厘
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