The air stream breaks up into turbulence, the excess energy is absorbed by the turbulent eddies and this energy is irrecoverable.This is where the majority of the energy is wasted.

 
  • 氣流會(huì )分散形成渦流,渦流吸收多余的能量,而這種能量是不能恢復的,能量的大部分就消耗在這里。
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