By the driving of the step motor, the ultrasonic sensor turns in immovable Angle.
2
高炉炉墙厚度在线监测技术的核心之一是超声传感器的设计。
The design of supersonic sensor is a core of the online technology for measuring thickness of blast furnace.
3
本文介绍了超声测距的基本原理，对超声传感器的结构及频率特性进行了分析。
In this article we introduce the basic principle of supersonic measure distance, and analyze the structure and frequency characteristic of supersonic sensor.
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