phase velocity

• 1. 相位速度: phase velocity | phase speed
• 2. 相位加速度: phase acceleration
• 3. 相位平衡快速梯度回波: balance-fast field echo | B-FFE

• 1.在某相位编码毫米波雷达系统中，要求很高的目标速度测量精度，因而目标多普勒频率测量电路的设计比较重要。
  The design of target doppler frequency measurement circuit is very important in phase coded MMW radar system because of the high measurement precision requirement of target speed.
  dict.yoduao.com
• 2.在某相位编码毫米波雷达系统中，由于对目标速度测量精度的要求很高，因此目标多普勒频率测量电路的设计也具有比较重要的地位。
  The design of target Doppler frequency measurement circuit is very important in phase-coded MMW radar system because of the high measurement precision requirement of target speed.
  dict.yoduao.com
• 3.激光相位多普勒(PDA)能够同时测量粒子的速度、大小和相对折射率。
  Laser phase Doppler anemometry (PDA) technology can be used to measure moving particle's velocity, size and relative refractive index simultaneously.
  dict.yoduao.com

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