Black steel keyboard什么意思?

Black steel keyboard什么意思? keyboard .. keyboard 请问black ew steel pipe 标准为A53 B Black Steel Coils 翻译成中文是什么啊? steel steel steel steel mechanical keyboard,membrane keyboard steel pipe,S235JR grade,black tube 是什么钢管,CEV:lower than 0.35% , keyboard是什么意思 keyboard是什么意思 Steel and cast steel black black black black