您要查找的是不是：
- A型超声法 A-mode echography
- A型超声测距法 A-mode echo ranging
- 超声测距系统 ultrasonic ranging system
- 法 law
- 基于脉冲延迟比较的测距法 A Ranging Method Based on Pulse Delay-Comparing
- A型超声 A-mode ultrasonic; A-mode ultrasound
- 无法 unable
- 高精度超声测距 high precision ultrasonic distance measurement
- 离散观测下频域比相测距法的性能分析 Performance Analysis of Ranging by Frequency Domain Phase Comparison Under the Discrete-time Observation
- A型超声仪 A-mode ultrasonic apparatus
- A型 A Mode; A-form
- A型超声(波) A-mode ultrasonic
- Ａ型超声扫描 A-mode ultrasonic scanning
- A型血 blood group A
- A型极光 aurora of type A
- B型超声 B-mode ultrasonography; B-mode ultrasonics; brightness mode
- A型柱 A-shaped column
- F型超声 F-mode
- A型车 A-type vehicle
- 一种用于测试甚高频B型超声诊断设备纵向分辨力的层状靶 Layered target for evaluating axial resolution of very-high-frequency B-type ultrasonoscope
