发布时间:2025-02-01 15:39:02
垫层浇筑一周时间后可以铺花岗岩。一般铺装用的垫层在混凝土终凝不能有过重的材料在上面堆积,硬物要轻放,一般养护不得少于七昼夜,垫层浇筑结实后,才可开始铺贴石材。
请问苏州吴苑丝韵丝绸工艺品有限公司的桑蚕丝被子是否长丝是100蚕丝吗
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