This valve regulates the flow of water.

这个阀门调节水流。

《牛津词典》

The floodgate was closed to control the flow of water.

为了控制水流，防洪闸门关闭了。

youdao

And this is the tail a car disconnected from the car and moved by the flow of water along the tunnel.

这是一节车厢与其他车厢分离的尾部部分，这部分是被沿着隧道的水流作用而形成的。

youdao

Project organizers hope to re-create wetlands in Picayune Strand and nearby lands by redirecting the flow of water in that area.

VOA: special.2010.09.21

Automatic faucets use an electronic sensor to start and stop the flow of water when people wash their hands.

VOA: special.2011.04.06

You can change the flow of water so that the temperature is hot or warm as desired.

VOA: special.2009.04.20

Power is equal to the flow of water out of the pipe, which depends on both variables.

WSJ: A Youngster's Bright Idea Is Something New Under the Sun; Scientist Is 13-Year-Old Aidan Dwyer

As the craft moves forward, the flow of water over the curved side pulls the wing downward.

FORBES: Cruising Altitude: Minus 400 Feet

Egypt and Sudan are particularly worried that this dam will allow Ethiopia to control the flow of water.

CNN: Ethiopia powers on with controversial dam project