purlin的精選

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用“purlin”造句大全，purlin造句

用“purlin”造句大全，purlin造句

2024-01-28
1、Theroofsystemconsistsofmainpurlin,bottomplate,secondarypurlin,absorptionsoundlayer,insulatinglayerandfaceplate.2、Thepaperpresentsstaticanddynamicanalysisofsteel-structurefactorywithsteelpurlinroof...