gravity circulation

基本解释

The liquid level must be high enough to assure the gravity circulation of liquid. In the jet pipe, the flowing gas holds a turbulent state.
要求液面高度能保证净化液的自流，射流管内气体处于湍流状态，混合气流速度应达到连续射流所需的临界速度。
Westinghouse says the technology is safer because it uses a simpler design that relies on passive mechanisms such as gravity and the natural circulation of water to prevent accidents.
西屋电气称，这种技术更加安全，因为它采用了更加简单的设计，利用重力和水的自然循环等被动机制预防事故。
gbyd.blog.163.com
The turbidite deposits are of both gravity flow and traction flow, forming not only fan-shaped lobes and dendritic channels, but also high tortuous channel systems by its inner circulation flow.
浊积水道的形态主要受地形坡度控制，其中高弯度水道主要发育在缓坡地段。