Keeping his distance, a diver sets up equipment to measure the whirlpool's flow rate.
在保持一定距离的同时，潜水员会安装设备来测量这个漩涡的流速。
This implies that the disturbance increases with distance along the axis of the swirling flow, but it does not grow with time.
这一假定意味着扰动沿涡旋流动的轴向随距离的增长而增长，但不随时间而增长。
Distinctive orange handle indicates "open/close" and direction of flow at a distance.
独特的橙色手柄可以远距离指示“启闭”和流体方向。
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