单词	useful quantity
释义	useful quantity 有效量
随便看	drawbar outfit draw bar performance draw bar pin draw-bar pin drawbar plate draw-bar plate brace draw bar plate brace draw bar pocket draw-bar pocket draw-bar power draw bar power drawbar power drawbar power measurement draw bar pull draw-bar pull drawbar-pull drawbar pull draw bar pull dynamometer drawbar pull measurement drawbar pull of tractor drawbar pun draw bar resistance drawbar resistance drawbar rig draw-bar ring 孤峤蟠烟孤嶂秦碑在孤帆一片日边来孤帆天际看孤帆天际看孤帆暮雨低孤帆远影碧空尽孤影小窗灯孤村几岁临伊岸孤村芳草远青荚叶青莲青菜青菜头青萍青萝卜青葙青葱青葱拌豆腐青蒜