短语词组短语watt -hour meter check 电能表校验standard watt -hour meter 标准瓦时计ZB Watt -hour meter ZB型电能表special watt -hour meter 特种电能表rate watt -hour meter 费率电能表digital watt -hour meter 电子式电能表civil watt -hour meter 民用电度表 返回 watt-hour meter