utility cow次级母牛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 Data Reduction Control实用数据整理控制Utility Carrier Communications通用载波通讯电子设备Utility can set when exiting.可以设置退出代码。utility index of land resources土地效用指数utility rate of luminous energy光能利用率utility business support system公用事业业务Utility value of transportation运输效用值Utility measurement instruments效用测量工具Utility Program Operating System应用程序操作系统Utility or other enterprise fund公用事业或其他企业基金