发布时间:2025-01-31 13:18:52
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。
推荐下2千多2019新款全屏指纹不卡拍照好电池耐用能吃鸡到超清的手机不好看都可以
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