n.再循環(huán)；回流；信息重記；信息重復(fù)循環(huán)

However, each installation should be evaluated for its own recirculation requirements of gpm and pipe resistance. 但是，每次安裝都需要對再循環(huán)要求的流量和管道對流體的阻力進行評估。

If air is recirculated to production areas, measures shall be taken to control recirculation of dust from production. 如果空氣是再循環(huán)到生產(chǎn)區(qū)，須采取措施控制從生產(chǎn)區(qū)帶來的塵埃。

As the jet angle decreases, the recirculation zone on the left side becomes smaller than that of the right side. 當射流傾角減小時，左側(cè)回流區(qū)的范圍變小，而右側(cè)的回流區(qū)增大。