Standard ultrasonic open channel flow sensors include 10 ft of cable, but can be purchased with up to 500 ft of cable.
标准型超声波明渠流量传感器包括10英尺的电缆，但可以用高达500英尺的电缆购买。
Standard ultrasonic open channel flow sensors include 10 ft of cable, but can be purchased with up to 500 ft of cable.
标准型超声波明渠流量传感器包括10英尺的电缆，但可以用高达500英尺的电缆购买。
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