The3- way valve( pos. no.25) has been operating( lower frame) with the linkage actuated by the single-acting cylinder( pos. no.21).是什么意思_The3- way valve( pos. no.25) has been operating( lower frame) with the linkage actuated by the single-acting cylinder( pos. no.21).在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句