钢的屈服点
Yield Of Steel
钢筋屈服点 Yield Point Of Steel Bar
让压性金属支架 Yielding Steel Arch
让压可缩性钢支柱 Yielding Steel Prop
钢筋屈服点 Yield Point Of Steel Bar
让压性金属支架 Yielding Steel Arch
让压可缩性钢支柱 Yielding Steel Prop
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