Two-time flow pulse transition is put forward to compensate the pulse count, by this method the flow pulse is sum up to assure fill precisely in large volume.
提出采用二次流量脉冲转换方式对流量计的发讯脉冲进行计数补偿，确保大容量时精确发油。
2
Specifies the repeat count, scan code, extended-key flag, context code, previous key-state flag, and transition-state flag.