underwater navigation meaning in Chinese

水下导航
水下航行

Communication , can be made up gps ins underwater navigation
可组成gps ins水下导航。
High precision positioning for underwater submarine is a long lasting difficult problem in the field of underwater navigation and positioning
潜艇水下高精度定位，长期以来一直是水下导航定位领域的一个难题。
Certified as a padissi . naui advanced open water diver or equivalent . for this course , equivalency is proof of certification beyond entry level with experience in deep diving and underwater navigation
为合格的padi . ssi . naui进阶潜水员或相同等级的潜水员.潜水员必须提出相关证照以证明有超越基础入门之深潜与水中导航的实际经验