The MCC or control panel shall be sheet steel, totally enclosed to IP 54 and free standing on a hot dipped galvanized welded steel channel plinth.是什么意思_The MCC or control panel shall be sheet steel, totally enclosed to IP 54 and free standing on a hot dipped galvanized welded steel channel plinth.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句