发布时间:2025-01-31 20:17:11
无非是隔音、刷涂料,贴壁纸这些。隔音这方面的话,用环保高效的梯度吸音棉比较合适。
螺纹紧固件的规定标记一般gb47t后面带一些数字比如5780或者65是什么来的
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