发布时间:2025-01-20 04:47:16
外墙是室外空气的隔墙,和室外空气直接接触的墙体,多为“冷墙”。内墙指在室内起分隔空间的主要作用,没有和室外空气直接接触的墙体,多为“暖墙”。用判定法定义,设A~B为一道墙,倘若A~B墙线能够切割相关围护结构的为内墙,反之则为外墙。
请问床上用品的面料标示105quot 40x40分别是什么意思呢
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