缩放喷管背压pbcr时,()A、出口气流流速为超音速B、喉部截面气流为声速C、喉部气流压力为pcrD、出口气流压力为pb

缩放喷管背压pbcr时,()

  • A、出口气流流速为超音速
  • B、喉部截面气流为声速
  • C、喉部气流压力为pcr
  • D、出口气流压力为pb

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