久久国产欧美日韩精品,日韩国产精品久久久久久亚洲,99视频精品全部免费免费,91精品国产综合久久走光

gearboxes的音標(biāo)：...

n.變速箱，變速器( gearbox的名詞復(fù)數(shù) )...

Other companies grumble about a lack of gearboxes and bearings.其他公司也因?yàn)樽兯傧浜洼S承缺貨而怨聲不斷.For use in most machine tool bearing & gearboxes lubricated by circulating system.可用于工具軸承 及 齒輪箱循環(huán)系統(tǒng).Suitable for use in enclosed industr...