基本解釋[機(jī)械工程]齒輪比例泵[經(jīng)濟(jì)學(xué)]可調(diào)排量泵詞組短語短語adjustable e discharge gear pump 可調(diào)排量泵adjustable discharge gear pump coupling 齒輪比例泵聯(lián)軸器adjustable discharge gear pump更多詞組專業(yè)釋義機(jī)械工程齒輪比例泵經(jīng)濟(jì)學(xué)可調(diào)排量泵