VOIP安全认证计费系统IPSAS
VOIP security authenticating and accounting system
长途电话计费系统
toll message accounting system
电量计费系统
electric energy billing system
Energy metering system
ammonium hydrosulfate
电量实时统计系统
active power real time statistic system
电能计费系统
Energy metering system
electricity metering system
电能量计量计费系统
the System of Measuring and Billing of Power Energy
power energy billing system
tele meter reading system
telemeter reading system
电信计费系统的设计
Design of telecommunications billing system
护理工作量统计系统
nursing workload statstics system
计费采集信息
collection of billing information
计量计费系统
measuring and billing system
measuring and charging system
power billing system