1、A controlled flow of air is used to separate the particles of flour according to size and weight.
一般采用可控的氣流將面粉顆粒按大小和重量分開。

2、A constant flow of air keeps the plants bathed in carbon dioxide.
室內空氣保持不停流動，確保作物隨時“沐浴”在二氧化碳之中。

3、a device for regulating the flow of air in a fireplace
調節(jié)壁爐中空氣流量的裝置。

4、Consider a ball that is spinning about an axis perpendicular to the flow of air across it.
觀察一個旋轉軸與空氣流動方向垂直的足球(見上圖)。

5、The driver used the dial mounted on the dash to control the flow of air into the vacuum chamber.
盤表控制進入真空管空氣流量。

6、a choke that automatically controls the flow of air to the carburetor.
自動控制空氣流入汽化器的阻氣門。

7、It provides a continuous flow of air into the throat and lungs while the person sleeps.
當病人入睡后，它向病人的喉部和肺部提供持續(xù)氣流。

8、the flow of air that is driven backwards by an aircraft propeller.
被飛機螺旋槳驅向后方的空氣湍流。

9、Ensure there is a free flow of air around the machine.
要確保機器周圍空氣暢通。

10、The hot-wire air flow sensor is a kind of sensor that can measure the mass flow of air directly.
熱線式流量計是一種可以直接測量空氣質量流量的傳感器。

11、The damper plate rotates around an axis rod to control the flow of air through the vent pipe.
這個風擋通過中心軸控制旋轉來讓通過排氣管的空氣流動起來的。

12、a choke that automatically controls the flow of air to the carburetor
自動控制空氣流入汽化器的阻氣門。

13、a device for regulating the flow of air in a fireplace.
調節(jié)壁爐中空氣流量的裝置。