发布时间:2025-01-31 19:33:21
一般情况下,植筋钢筋的锚固长度来是15D; 而混凝土结构加固设计规范GB50367-2006规定: 深固建筑抗震加固。
houses房子的复数 horses马的复数classes班级的复数它们的音标是什么
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