prepayment watthour meter
... 预混合器：premixer 预付电度计：prepayment watthour meter 预防药：Prophylactic ...
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短语
双路预付电度计
two-circuit prepayment meter
两部阶跃预付电度计
[电]
two-part step-rate prepayment meter
两部预付电度计
[电]
two-part prepayment meter
双价率两部电度预付计
[电]
two-rate two-part prepayment meter
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