喷气流 [
pēn qì liú]
[航] jet stream
[流] jet flow
- 这借助于改变喷气流的形状就可以办到,如图19-3所示。
This can be achieved by changing the pattern of the exhaust jet as shown in fig. 19-3. - 如果混合速度加快或喷气流相对于大气的速度减小,噪声水平就会降低。
A reduction in noise level occurs if the mixing rate is accelerated or if the velocity of the exhaust jet relative to the atmosphere is reduced. - 由于这种喷气流中含有大量未燃烧的氧气,在喷管中往往安装加力燃烧室。
Owing to the high proportion of unburnt oxygen in this efflux , afterburners are often provided in the jet-pipe.