发布时间:2025-01-20 18:35:06
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。
我家阳台有个矮墙坎墙下雨就漏水是外墙瓷砖有问题我想把坎墙去掉直接做成飘台这样违规吗
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