水洞种类之一的重力式水洞依靠水的势能来提供动力。
The water tunnel of gravitational type is driven by the water's potential energy.
重力式辊筒输送机由于其自身的特性，必须在辊道中设置制动辊。
Due to its speciality, the gravitational roller conveyor must be equipped with brake rollers in its table roller.
针对重力式网箱数值模拟中波浪理论选择问题进行了专门的分析与讨论。
A special discussion is carried out to analyze the wave theory selection in the simulation of Gravity cage.
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