PCB防火等級
用英文表達
翻譯如下:
PCB fire-protection rating
重點詞匯釋義:
fire-protection rating
[詞典] 防火等級;
[例句]The?paper?describes?the?fire-protection rating ?and?fire?testmethods?on?offshore?platforms.
闡述了海洋平臺防火等級和防火試驗方法。