This paper introduces general knowledge of drilling well, common failures of drilling well, and diving operation of drilling well.
本文介绍了钻孔井一般情况，钻孔井的常见故障及钻孔井潜水作业。
This paper introduces the strength of diving management, and describes the basic way of improving the safe underwater operation for the offshore engineering technical managers as reference.
本文从加强潜水专业管理入手，阐述了提高水下作业安全性的基本途径，可供海上工程技术管理人员参考。
The product is extensively used in diving travel, aquaculture, fishery, operation under water and rescue under water.
广泛应用于潜水旅游、水产养殖、渔业捕捞、水下施工、水下救援等。
The product is extensively used in diving travel, aquaculture, fishery, operation under water and rescue under water.
广泛应用于潜水旅游、水产养殖、渔业捕捞、水下施工、水下救援等。
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