When extended, the blocker doors block the fan exhaust, forcing air in the reverse direction through the cascade segments.
当扩展时，阻流门阻止风扇排气，迫使空气反向通过级联段。
2
A firework that ascends high into the air where it explodes in a brilliant cascade of flares and starlike sparks.
一种鞭炮，能够高高地冲入空中，并在那里爆炸，发出炫目的闪光和星状的火花。
3
The whole control system consists of a cascade fuzzy control system for temperature, a ratio control system for air flow, and an adaptive compensation system.