utility wax多用蜡utilityn.效用；实用；公用事业（费）；[计]应用程序adj.多效用的；多功能的utility aviation通用飞机utility increase效用递增utility debugger实用调试程序utility pipeline公用事业管线utility register实用寄存器utility analysis效用分析utility fairness效用公平性utility character经济性状Utility computing效用计算utility in winter在冬天的用处