#建筑
Tue, 12 Feb 2019 20:23:24
Thu, 07 Feb 2019 14:15:30
Thu, 07 Feb 2019 14:15:30
为什么我看到这个肩带第一反应就是承重和结构力学,建筑类的职业病吗?
#肩带 #承重 #结构 #结构力学 #建筑 #职业病
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