发布时间:2025-01-31 13:18:30
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。
明年三月的婚礼现在想找一个有实力的口碑好价钱不高的婚礼策划公司谁能推荐一个谢谢啦
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