... demand system 自动供氧系统 density airspeed 密度空速 density error 密度误差 ...
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Built from a box fan, medium-density fiberboard, lexan and aluminum, the tunnel increases airspeed by about 240 percent and cools its contents with a brisk 9 mph breeze.
ENGADGET: Wind tunnel PC case pushes the air cooling envelope, does its thing for cancer research
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