发布时间:2025-01-18 05:32:48
如果你肯花钱的话,建议预制一根预应力梁比较安全。主筋用32的箍筋12的就够了,绑个双排的笼子。
田宫坦克模型履带粘接问题我这个模型的履带是那种整条黑色橡胶那种连接处是4个小齿的那种但是我涂
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