发布时间:2025-01-18 15:42:23
脊高是多少如1.5米,即1.5÷跨度一半7.5x0.25=50毫米
60寸电视机长宽多少是不确定的一般来说60寸电视的长约138厘宽约78厘米不同品牌型号机型略有差异
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