功能单元

According to the demand of high magnetic field power supply, reference is increased with a set ramp rate and stops at a set stable value, so reference system is composed of digital setting and digit to analog converting circuit. But the stability of reference is mostly guaranteed by the performance of D/A circuit, so D/A circuit is particularly studied in reference system. The scheme of D/A circuit, the selection of DAC and its voltage reference, hardware anti-jamming design and PCB design are discussed in detail, and software of remote control and PLC are discussed in brief. Zero-flux DC current transformer well satisfies the demands of the high stability of Load current detection unit, so the principle of zero-flux DC current transformer is analyzed; in the mean time a project which detects the long term stability is designed. During 8 hours, analog signal which is detected with high precision digit multimeter is recorded in computer at 1HZ frequency by GPIB communication. The drift error source and related parameters are explained in the compare-amplify part. Detailed subtraction circuit is designed; also amplifier chip and periphery components are selected and verified according to the theory of error analysis.

根据强磁场电源的需求，参考源应按照软件设定的斜率逐渐上升到设定稳态值，则参考源系统应由数字给定和数模转换电路两大部分组成，而参考源的稳定度主要依靠完成数模转换功能的模拟电路的性能来保证，因此本文对参考源系统的研究以数模转换电路为重点，分别从电路方案的确定、数模转换芯片及其基准电压源的选取和验证、电路板硬件抗干扰和PCB设计几方面进行了论述，然后对数字给定部分的远控组态和PLC程序设计作了简要介绍；采用零磁通原理的直流电流转换器很好地满足了对负载电流检测单元高稳定度的需求，本文详细分析了零磁通检测的原理，并在选定此种类型电流转换器的基础上设计了一套检测长期稳定度的方案，8小时内以1秒为采样周期，通过计算机Labview程序和高精度数字电压表的GPIB通讯，将被高精度数字电压表数字化后的模拟信号采样值连续记录至计算机中；比较放大环节简要阐述了漂移产生的原因和相关参数指标，确定了具体的减法电路形式，并根据误差分析理论对运算放大器和外围元器件进行了选取和验证。

On the cell-control computer, a perfect DNC monitor software is also realized.

在单元机上开发了功能完善的DNC监控软件。

I also found that multi-domain polypeptide genes are less dispensable but more duplicable than single domain polypeptide genes.

可能的情况是当一个异复合体次单元基因被剔除的时候，整个复合体的功能都会受到影响。

At one time, developing a new embranch subject -Binary Optics, it make use of diffraction theory,Computer Aided Design and VLSI ,sculpting the embossment of two or more steps on the surface of optical instruments , its photic characteristic including pure phase ,coexiting reappearance and high diffraction efficiency.

在光纤通信和光信息处理中具有重要的作用，可以完成站点与站点、系统与系统、板与板、芯片与芯片以及各逻辑处理单元之间的光信号连接、多项式求值、排序、快速傅立叶变换、矩阵变换等功能。

Phase change memory with N-GST can realize three-state storage in one PCM cell by using the resistivity difference between the amorphous state, the face centered cubic phase and the hexagonal phase of GST.

利用N-GST薄膜的非晶态、晶态面心立方相和晶态六方相的电阻率差异，能够在同一存储单元中存储三个状态，实现相变存储器的多态存储功能。

Data inspecting, saving, monitoring parameters real-timely and modifying injection and ignition parameters factitiously can be realized by communicating with ECU via RS-232C serial interface. Analyzing data, obtaining the best work nodes and drawing maps can also be realized by this system.

该系统使用RS-232C接口与自行开发的电喷系统的电控单元ECU进行通信，实现数据实时采集、保存、监控、在线修正的功能，并可以对采集的数据进行分析，获得各工况最佳工作状态点，绘制喷油和点火提前角MAP图，为实现电喷发动机的精确控制提供参考。

Adder, subtractor, and multiplicer, which are included full adder, are the most common operation units in ALU.

加法、减法以及乘法等等皆是常用的运算，这些算术逻辑运算单元皆包含全加器的功能在其架构中。

Residential units within the project space design with functional changes, furniture layout closely connected.

住宅单元内的细部空间设计，要与功能的变化、家具的布置紧密相联。

Using object-oriented method the manufacturing system is abstracted and generalized, the function model and data model of the cell controller are established.

运用面向对象的分析方法，对制造系统进行了抽象和概括，建立了单元控制器的功能模型和数据模型。

Handspring's newest device family is the Treo, which combines three functions into one compact unit: a GSM cellular phone, wireless access for messaging and web browsing, and a Palm OS personal organizer.

Handspring的最新设备成员是Treo，它在一个紧凑的单元里结合了三项功能：GSM蜂窝电话、无绳访问信息和网络浏览和一个Palm OS个人管理者。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。