犁体曲面

net working capital

working face

high-altitude operation car【车辆】;overhead working truck【车辆】

soil working agriculture, forestry

socially necessary labo(u)r time【劳经】;socially necessary working time【劳经】;

attaching closure devices in the working of paper

working barrel【油气】

working pit edge【矿】;working slope【矿】