A Comparative Study of Senior Teachers Training Plan between China and the United States

At the same time, in various training and big graduate student in north teacher course a further studies is study that management theories that bigness influence impression, let me bringing the business enterprise to the CIS rather deep.

同时，在各类培训及北师大研究生课程班进修时学习的管理理论，让作者对CIS给企业带来的巨大影响印象颇深。

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After graduation, he was appointed as a teacher in Beijing Normal University in1981.

1981年毕业后何教授来到北师大任教。

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Degree: Ph.D. ( Beijing Normal University, 1998).

学位：博士（北师大，1998）。

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The way of neutral grounding in 380V LV distribution system was introduced and the characteristics of grounded and non grounded systems were analyzed.

本文介绍了380V低压配电系统中性点的接地方式，分析了接地与不接地系统特性。

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Now the capacity-voltage transformer ( CVT) is normally operating in a system earthed with large current, under a specific operation, however, it may run in a system without earthing.

电容式电压互感器（CVT）目前正常运行在大电流接地系统中，但在特定的操作下，可能运行于不接地系统。

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By MATLAB, the transient process of TV in ungrounded power system is simulated, both in normal service or in some kinds of grounding fault conditions. This paper discusses the magnetizing inrush current flowing through TV and the abnormal overvoltage of opened delta-winding.

用MATLAB软件仿真研究了中性点不接地系统中电磁式电压互感器在系统正常和接地故障运行的全过程，分析了TV励磁涌流造成熔丝熔断的规律性及开口三角绕组电压异常的原因。

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The ferroresonance, which results from the electromagnetic potential transformer in a 10 kV distribution system, is simulated and studied by the Electro-Magnetic Transient Program ( EMTP).

用EMTP仿真计算了10kV中性点不接地系统电磁式TV饱和引起的铁磁谐振。

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A New Measure to Eliminate the Ferromagnetic Syntonization in 10-35 kV Non-grounding System

一种消除10～35kV不接地系统铁磁谐振的新措施

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Study on the Single Phase-to-Grounding Fault Detection in 35 kV Networks with Isolated Neutral

35kV中性点不接地电力网单相接地故障检测研究

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For an ungrounded neutral low voltage power system in mine, its insulance ( r), capacitance ( C) and leakage resistance ( R) to the ground are three important parameters in determining the zero sequence voltage.

对于中性点不接地的矿井低压电网，其对地绝缘电阻r，电容C和漏电电阻R，是决定零序电压的3个重要参数。

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The Dividing Frequency Resonance and Damping Measure in Ungrounded Network& A Simulating Calculation of Networks by Means of EMTP

中性点不接地网络的分频谐振与消谐措施&用EMTP对网络的模拟计算

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Diffusion capacity ( DLco) of 315 asbestos workers without obvious radiological pulmonary changes and 314 healthy workers without history of exposure to industrial dust as controls were measured by means of CO single breath technique.

本文采用一次呼吸CO法，测定了315名石棉工人和314名作为对照的不接尘健康工人的弥散量，并测定了通气功能。

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Analysis of the Neutral, the low resistance grounding and arc suppression coil grounding through the advantages and disadvantages of three ways, using MATLAB simulation under different single phase grounding fault in the operation.

分析了中性点不接地、经小电阻接地和经消弧线圈接地三种方式的优缺点，用MATLAB对不同接地方式下单相接地故障时的运行情况进行了仿真。

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An effective method for preventing high voltage fuse of Pt from breaking in 10~ 35? Kv isolated neutral system

10～35kV中性点不接地系统中防止PT高压熔断器熔断的方法

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Study on Neutral Point Protection without Grounding for 220 kV Transformer

220kV不接地变压器中性点绝缘保护研究

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This paper has derived calculating formulas of arbitrary two point faults in neutral non-grounded power system by bus impedance matrix. An example of calculation is carried out with IBM computer.

本文推导出用结点阻抗矩阵进行中性点不接地系统中任意两点异相接地故障计算公式，并编制程序在IBM机上调试通过，最后进行了算例分析。

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96 30-day-old AA chickens were randomly divided into 5 groups. Chickens in Group 1 were not challenged with AIV;

将96只30日龄AIV阴性AA肉鸡随机均分为5组，第1组不接毒，不给药；

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Plug BEC from ESC, then digital servo into this card for offline use.

不接电脑，插接电变的BEC，及数位伺服机，离线使用程式卡。

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The DCS power grounding should be: when three-phase and four-wire system is adopted, the neutral wire should be grounded;

而采用单相电源时，若DCS与电力设备为公用接地，则DCS电源零线不接地；

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In ungrounded systems, PT saturation result in ferroresonance is a appear frequently and work accident sort of inner overvoltage.

在中性点不接地电网中，由于电磁式电压互感器（以下简称PT）饱和而引起的铁磁谐振是出现最频繁、造成事故最多的一种内过电压。

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