CHECKERED STEEL PLATES 中文意思是什么如题

CHECKERED STEEL PLATES 中文意思是什么如题 steel steel steel steel aluminum checkered floor plates是什么意思 Tu es ma plat have a checkered history have a checkered history/career/past etc Steel and cast steel The plat is ___ of clay.(make) galvanized steel steel rebars stainless steel Steel是什么意思 alloy steel steel square forged steel laminated steel