This paper describes six practical working models of gravity cage and evaluates the flow velocity of the inner point and outer back point of the cage net under the condition of pure current.
设计了六种重力式网箱的模型，在单纯流条件下，通过模型试验测试了网箱网内与网后的流速。
When the pressure decreases, variable pump will detect this change and automatically increase the angle to augment flow capacity, which causes the grab back to normal working condition.
一旦工作压力降低，泵感应到压差增大，会自动增大斜盘角度增大排量，抓斗又处于工作状态。
After the clearing of the circuit trouble, the PTC Thermistor begins to cool and come back to the state of low resistance, and then the circuit enters normal working condition.
在电路故障排除后，过载保护PT C热敏电阻冷却并恢复到低阻态，同时电路也进入正常工作状态。
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