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- ultrasonic ranging principle 超声波测距原理
- The Sampling and Handling of Ultrasonic Ranging Data for Robot. 机器人超声测距数据的采集与处理。
- AVR single chip ultrasonic ranging modules do, schematic and source code. AVR单片机做的超声波测距模块，原理图和源码。
- This paper describes the principle of microprocessor ultrasonic range finder. 主要介绍微电脑超声测距仪的工作原理。
- Abstract：This paper introduces an ultrasonic ranging method based on analyzing the envelope of echo . 摘要：介绍了一种基于回波包络分析的高精度超声波测距方法。
- This paper introduces an ultrasonic ranging method based on analyzing the envelope of echo. 介绍了一种基于回波包络分析的高精度超声波测距方法。
- Echolocation calls are usually ultrasonic ranging in frequency from 20 to 200 kilohertz (kHz),whereas human hearing normally tops out at around 20 kHz. 用于回声定位的叫声一般是20－200千赫之间的超声波，而人所能听到的最高频率在20千赫左右。
- A monitoring system of mine hoist was designed by using laser ranging principle, single-chip microcomputer and its around circuit and assembly language. 摘要文章利用激光测距原理，采用单片机及其外围电路和汇编语言编程，设计了一套提升机监测系统。
- Echolocation calls are usually ultrasonic ranging in frequency from 20 to 200 kilohertz (kHz), whereas human hearing normally tops out at around 20 kHz. 用于回声定位的叫声一般是20－200千赫之间的超声波，而人所能听到的最高频率在20千赫左右。
- Introduces the principle of ultrasonic range measurement,and analyses the main error sources of ultrasonic range measurement,designs an ultrasonic range measurement system with high precision. 介绍了超声波测距的原理,分析了超声波测距产生误差的原因,设计一种高精度超声测距系统。
- Moe has a grass shearer in his mouth and ultrasonic range finders to keep him from crashing into things. 莫伊的嘴巴里安装有割草机，身上还装有防止碰撞物体的超声波测距仪。
- For the sake of improving on traditional the means of telemeter, This article studys and designs Ultrasonic Range Finder Based on Singlechip. 为了改进传统测距方法的不足,本文作者研制了单片机控制的超声波测距仪。
- I was reading a magazine when the phone rang. 电话铃响时我正在看一本杂志。
- The Chinese imitates the realistic world.Formats of calligraphy of proper nouns, dates, addresses comply with the range principle strictly, and accord to forms and arrangement of lines in calligraphy. 汉语模拟现实世界，人名、地名、日期时间、地址的写法，遵循范围原则比较彻底，与行款一致。
- The melody still rang in her ears. 那个旋律仍然在她的耳际荡。
- She had the sapphire set in a gold ring. 她把那枚蓝宝石镶在金戒指上了。
- Design of Ultrasonic Ranging System for Liquid Caging 超声波测量罐中液面高度的系统设计
- The diamond ring dazzled with brilliancy. 这只钻石戒指闪耀夺目。
- Their refusal rang the knell of our hopes. 他们的拒绝是我们希望破灭的凶兆。
- He rang off without giving his name. 他名字也未说就挂断了电话。
