two-circuit prepayment meter 双路预付电度计
single rate prepayment meter 单率预付费用电表
two-part step-rate prepayment meter [电] 两部阶跃预付电度计
load rate prepayment meter 根据负荷率预付电费电表
two-part prepayment meter [电] 两部预付电度计
two-rate two-part prepayment meter [电] 双价率两部电度预付计
step-rate prepayment meter 分级预付电度计
keypad prepayment meter 按键式预付费
tokenless prepayment meter 无介质预付费
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