用绝对值电路输出正极性瞬时流量信号。
The positive instantaneous flow signal were transmited by absolute value circuit.
国内现行的水质监测是取瞬时水样作水质分析，不测流量。
The evaluation of water quality is based on the monitoring of water quality.
国内现行的水质监测是取瞬时水样作水质分析，不测流量。
The evaluation of water quality is based on the monitoring of water quality.
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