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variable geometry nozzle
avia.
变几何形状喷管
(直径可以改变的喷管。通常,它的形状在亚声速时是收敛的,在超声速或者加力燃烧时是扩张的。可变几何形状喷管不但利于加力燃烧室的噪声控制,而且方便起动)
tech.
可变叶角喷嘴
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