The thesis is about the research and development of the portable dynamic railway detecting instrument system used with GPS.

This instrument using the position technology of GPS and computer technology and sensor technology has solved the main limitations of the portable railway detecting instrument system used today. The thesis has seven chapters.

该仪器利用了GPS全球卫星定位技术、计算机技术和传感器技术，所研制测试仪系统解决了目前便携式轨道测试仪系统存在的主要缺陷，取得了令客户满意的结果。

Design of Portable Railway Signal Record and Analysis System

便携式铁路信号记录分析系统的设计

Microwave infrared scanner is important portable equipment in meteorological Satellites.

微波成像扫描仪是气象卫星上的一个重要设备。

Portable equipment for measuring receiving voltage sensitivity of hydrophone at low frequency

便携式水听器低频接收电压灵敏度特性测量仪

Android is an operating system based on Linux, and used on portable equipment commonly.

Android是一种以Linux为基础的操作系统，主要用于便携设备。

Equipment reliability testing Preferred test conditions indoor portable equipment Low degree of simulation

GB/T7288.1-1987设备可靠性试验推荐的试验条件室内便携设备粗模拟

After reformation of drill pump, rotary table and drilling rod, the triple-men portable rig has achieved good results when drilling is in breed zone by netting box and other land areas.

对三人钻机的压水泵、转盘、钻杆部件进行改进后，三人钻机在围网养殖区以及其它陆上钻井时，都取得了良好的效果。

This portable rig can only drill 15m deep holes.

这台人抬钻机只能打15米深的井。

An Introduction to MSY-80 Type Portable Pulse Pneumatic Conveyer

MSY·80型移动式脉冲气力输送机的介绍

Kinetic Characteristic Test and Analysis of Portable Belt Conveyer

移动式排土机动态特性测试与分析

A portable multifunctional operating appliance of bone surgery

便携式野战&Ⅰ型多功能骨科手术器械

Since low power is of importance to portable electronic appliance supplied by batteries, the discussion focuses on the low power design. And after comparing and analyzing different structures, a best tradeoff between performances and power dissipation was achieved.

鉴于低功耗在便携电子产品中的重要意义，论文围绕低功耗设计展开，在系统设计和电路设计中比较分析了多种结构，作出性能与功耗的优化组合。

Development of mine portable digital recorder

矿用便携式数据记录仪的研制

I'm calling to recommend you a new style of portable type recorder.

我打电话向您推荐一种新款式的便携式录音机。

Feasibility Study of Application of Portable Electronic Recorder in Fuel Gas Meter Reading

手持电子抄表应用于燃气抄表的可行性研究

The Exploitation and Application of Matrix LCD in Portable Data Recorder

点阵式液晶显示器在便携式查表器中的开发与应用

Development of Portable Data Recorder for Adjusting Test of Safety Valves

便携式安全阀调整试验数据记录仪的研制

The Design of Portable Fault Recorder Based on A New Structure

一种新结构的便携式故障录波装置设计

Development of Portable Recorder for Concrete Pouring

便携式混凝土浇筑记录仪的研制

As fast growing of consumer electronics market, System-On-Chip are widely applied to portable battery powered equipments and wireless communication products.

随着消费类电子市场的蓬勃发展，片上系统在手持音频设备和无线通信领域得到了广泛的应用。