All of the pumps which feed the main and auxiliary hydraulic systems are con-nected to, and driven by, a single pump drive transmission (PDT).是什么意思_All of the pumps which feed the main and auxiliary hydraulic systems are con-nected to, and driven by, a single pump drive transmission (PDT).在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句