基本解釋[機(jī)] 擺動(dòng)換向齒輪詞組短語短語tumbler r gear 擺動(dòng)換向齒輪gear tumbler 齒輪換向器tumbler gear更多詞組英英字典柯林斯英英字典 a train of gears in which the gear-selection mechanism is operated by tumblers tumbler gear劍橋字典tumbler gear柯林斯字典專業(yè)釋義機(jī)械工程擺動(dòng)換向齒輪