One end of the draw rod fixedly connected with the outer end of the telescopic rod is connected with a safety draw hook.
所述的伸缩杆的外端固定连接有牵杆，在该牵杆的端部连接有保险牵引钩。
The side surface of a port of the lower tube is provided with a notch which is provided with a clamping and fixing device of the telescopic rod.
下管的 端口侧面开设有缺口，缺口处设有伸缩杆的卡固装置。
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。
应用推荐