One end of a probe telescopic rod is provided with an ultrasonic sensor, a flow velocity determinator, a pressure sensor and a vacuum piston water sample collector.
探头伸缩杆一端安有超声波传感器、流速测定仪、压力传感器和真空活塞水样采集器。
2
The pressure device is fixed at the tail end of a carriage bottom and the lock bolt is connected with the connecting rod of the pressure device;