都是木质结构的悬臂梁，看样子是承重标准低了点

来源: 547788 于 2023-08-08 00:26:51 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.