发布时间:2025-01-19 02:33:27
1/6-1/4内。为保证梁底方木安装方便,弧形梁模板弧长控制在1.2m1.5m左右为宜。,三铰拱或弧形轻型桁架,至于拱高,可在1/6-1/4内取值,南方防风,北方防雪。
广东省东莞市清溪镇百家村38号是个煤气站里面有100瓶左右我也住在这里很危险又不想搬走怎么办
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