单词	参考号码
释义	参考号码reference number
随便看	double rigging luff double right rotation double ring double-ring double-ring oil sealing double ring valve double ring zoom double-ripper double-rivet double-riveted butt joint double riveted joint double riveted joint; double riveting double-riveted lap joint double riveting double riveting--double riveted joint double rivet joint double road train double, roche double-rocker double rocker mechanism double-rocker mechanism double-rocker mechanism/double-rocker double rod cylinder double-rodded leveling double rod (pneumatic) cylinder