只要深吸一口气就能在水里待上一分多钟。
If you take a deep breath you can stay under for more than a minute.
介绍迷宫环封密装置在吸口侧无封水的大功率泥浆泵上的应用，以及迷宫环的设置与安装。
The paper introduces the application and installation of labyrinth sealing device in high - power mud pump without being sealed at suction mouth side.
在此基础上分析设计了对吸口位置精确定位的控制方法，以及传感器选用的可行性。
Based on that the paper implement the method of point the suction device accurately and analyse the feasibility of sensor.
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