1)  UM71
UM71
1.
Improvement of Automatic Block Link Circuit of UM71 Four-aspect and AC Counting Three-aspect;
UM71四显示与交流计数三显示自闭结合电路的改进
2.
The Application of DSP in the fault diagnosis of UM71track circuit;
DSP在UM71轨道电路故障诊断系统中的应用
3.
Electric Characteristic Testing and Analysing Method of UM71 Type Track Circuit;
UM71轨道电路电气特性测试分析方法
2)  UM71 signal
UM71信号
3)  UM71 system
UM71系统
1.
This paper introduces principle, characteristics and localization process of UM71 system as well as its improvement schemes for adapting characteristics of Chinese railway.
介绍UM71系统的原理、优点、国产化进程以及该系统为适应中国铁路的特点而进行的诸多改进方案。
4)  reconstruction of UM71
UM71改造
1.
Introduces the practical main line coded interim scheme for putting into operation of 25 Hz in station during the reconstruction of UM71 in section,which is convenient for the making of a scheme for putting into operation and the preparation for putting into operation.
介绍了区间UM71改造中站内 2 5Hz开通可采用的正线电码化过渡方案 ,为开通方案制定及开通准备提供方便。
5)  UM71 track signal
UM71轨道信号
1.
This paper presents a method to demodulate the UM71 track signal based on EMD and ZFFT.
本文将介绍一种基于EMD(Empirical Mode Composition,经验模式分解)和ZFFT(Zoom-FFT)的UM71轨道信号解调算法。
6)  UM71 frequency-shift capacitance
UM71移频电容
1.
Aimed at the demand of intelligent data management for UM71 frequency-shift capacitance online measurer, a data support system is designed and developed.
针对UM71移频电容在线测试仪测量数据智能化管理的要求,设计、开发UM71移频电容在线测试仪数据支持系统。
补充资料：alumin(i)um oxide
分子式：
分子量：
CAS号：

性质：Al2O3 俗称矾土。白色粉末。密度3.9-4.0。熔点2050℃。沸点2980℃。不溶于水，能渐渐溶于浓硫酸。用作研磨剂，并用于制坩埚、瓷器、耐火材料和人造宝石等。自然界中有刚玉等矿物。由煅烧氢氧化铝而得。因原料氢氧化铝晶形的不同和焙烧条件的差异，形成不同晶形的氧化铝，可用作制铝原料，并可制成不同晶形的氢氧化铝。

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