Based on the fault analysis of retard grid R3 and R4, the grid was scrapped due to contactor tip quality and improper tip installation.是什么意思_Based on the fault analysis of retard grid R3 and R4, the grid was scrapped due to contactor tip quality and improper tip installation.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句