首先

This paper firstly presents the hardware of the alternating current servo system, expounds the theory of neural network, fuzzy c...

本文首先介绍了交流伺服系统的硬件组成，阐述了智能控制领域的神经网络理论、模糊控制原理和模糊神经控制方法。

First it produces the pulse signal by the multivibratorwhich is consisted of 555 timer and send in the detecting coil to form the alternating magnetic field, then it asopts UGN3503 linear half-effect as prode to the magnetic field change into the voltage signal change,after enlargement electric circuit and peak value examination electric circuit,the signal be treated to send into ADC0809 modulus converter change moduluses, then the digital signal after the modulus converter is changed is sent into AT89C51one-chip computers afterwards, after the digital filter, AT89C51one-chip computers afterwards compares the data to the reference voltage and judges whether to have detected the metal and alarm.

这个系统是以AT89C51单片机为核心，首先由555定时器构成多谐振荡器产生脉冲信号送入探测线圈以形成交变磁场，然后经过线性霍尔器件UGN3503将磁场变化转换为电压信号的变化，经过放大电路和峰值检测电路，经数模转换之后输入到单片机中，由单片机对数据进行软件滤波之后，与基准值比较之后，判断是否存在金属和报警显示。

First, this paper briefly presented the construction of the software and hardware system of the ATE8000- 1 integrated test stand, and the monitoring circuit designs of alternating current power supply used voltage for this test stand.

文中首先简要介绍了ATE8000-1综合测试台系统的软硬件结构和总体方案，设计出了该测试台交流电源输出电压的监控电路。

On the other hand, it is the alternation or renewal process of different economic polices in the system of economic policy.

一 本文首先在第1，2章对经济政策及其变迁的有关概念和假定做了分析。

The degradation characteristics of ZnO-glass varistors have it's own features. For the first time, degradation phenomena of varistors under direct biasing, alternative field and pulse current are examined respectively in this thesis.

ZnO-玻璃系压敏电阻的老化有其自身的特点，论文首先分析了压敏电阻在直流、交流和脉冲电流作用下的老化实验现象，在此基础上，分析了各种条件下的老化机制。

Satellite altimetry data were used to determine the locations, scales and life-spans of the mesoscale eddy A and B, respectively.

首先利用卫星高度计资料发现并分析该海区8月15日到9月6日之间出现的中尺度涡A、B的位置、范围和生消过程。

Firstly, a simple introduction of the theory of the management information system and its development is given in this paper. The railway managing departments are tending to use more and more management information system to prove the working efficiency in our country. And the QingZang railway lies on the altiplano.

本文首先简要介绍了管理信息系统的概念和发展历史，结合铁路信息化的发展趋势，和青藏铁路地处高原、环境恶劣的特殊情况，阐述了对青藏铁路配电实现信息化管理，开发配电管理信息系统的必要性。

During the long historical development, now, families of Mongolia people live everywhere in Mongolia altiplano and the country.

首先，雪山蒙古人所保留传承的传统文化内容之多、形式之完整，是远非其他地方蒙古人所可比拟的。

First ,It has been cleared about the concept of altruism.

首先明确了利他主义的概念。

This article mainly take the cyclotrimethyl, the aluminite powder as well as their mix dust as the object of study, used 1.2 liter Hartmann tubes to conduct the experimental study to their detonation characteristic.

首先拒绝软件翻译，如果多人帮忙，选择最优一人赠送40金币，摘要如下，谢谢各位！本文主要以黑索金、铝粉以及它们的混合粉尘为研究对象，利用1.2升哈特曼管对它们的爆炸特性进行了实验研究。

And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.

同时，论述了一体化管理体系构建中的几个主要问题，包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。

Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.

运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。