Each hull of its catamarans has an underwater duct which serves two functions (see illustration).
其双体船的每面船体都有水下管道，提供两种功能(见插图)。
To assure adsorption reliability and movement agility of an underwater robot that will clean a ship's hull, the adsorbability and drive torque should be ascertained properly.
为了保证水下船体表面清刷机器人吸附可靠和运动灵活，需要合理地确定机器人的吸附力和驱动力矩。
In order to evaluate the security of an underwater towed system which is deployed or retracted from the up stabilizer of a submarine, the near wake flow field of the propeller and hull was calculated.
为了对置于潜艇尾部的水下拖曳系统在收放缆时的安全性进行评估，计算了螺旋浆和艇体的尾流近场。
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