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
