周期地

We will continue to provide customers with high-quality products, fast delivery cycle, competitive prices and comprehensive after-sales service, so customers get the most effective and efficient in order to best show in front of customers so that both sides benefit.

我们将不断地为客户提供高品质的产品，快捷的交货周期，具竞争性的价格及全面的售后服务，让客户获得最大时效，以最佳效率呈现客户面前使双方获益。

The cycling life of Ni 〓 was measured with powder microelectrode by cyclic voltammetry for the first time. Results show that the depth of charge is up to 75%, and the depth of discharge almost reached to 100% when the scanning range is controlled within 0～ 0.6V vs.

对Ni〓粉末微电极的测试表明，当控制三角波扫描范围0～0.6V、扫描速度20mV/s时，每次循环电极的充电率可达到75%，而放电率接近100%，完成一个周期仅需要1分钟，因此极大地缩短了测试时间。

A new method of gas chromatographic analyses in the production of chloroacetic acid for process control using diazomethane as esterification agent is studied.

目前企业生产分析按照国家专业标准﹝1﹞进行，但分析周期长，不能对反应过程进行有效地实时控制，生产过程的实际中控方法为密度法。

Such phenomena are analytically verified when the coupling matrix is diffusively coupled with periodic and Neumann boundary conditions.

当耦合矩阵是扩散耦合且具有周期与诺曼的边界条件时，这种现象将被分析地证实。

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。

The wide appeal of the Passion cycle is clearly shown by the prints of Albrecht Durer.

广泛呼吁的激情周期是清楚地表明，由版画的Albrecht其后

A set of edge-triggered latches which jointly store the state of a binary value through a clock cycle is termed a register.

用一组沿触发锁存器在一个时钟周期内共同地存储一个以二进制数表示的状态，就称为寄存器。

In this Fuzzy Control scheme,Fuzzy control rule was established carefully based on traffic control theory and experience. The method was simulated.The result of simulation indicated that the method has a little calculation,can efficiency use experienceof engineer and improve response speed.

在模糊控制方案的设计中，我们以信号交叉口交通控制理论为基础，依据常识和经验精心设计模糊控制规则，并根据交通仿真技术，将该方法的效果同定周期控制、感应控制方法进行了比较，从对比结果可以看出：该方法计算量小，并有效地利用了交通工程师的经验，提高了控制的响应速度和实时性。

It is necessary to determine charged dust layer thickness at back corona breakdown point in electrostatic precipitation in order to select rapping periodicity reasonably.

为了合理地确定静电除尘器清灰振打周期，通过理论与试验方法确定静电除尘器粉尘层反电晕击穿厚度很有必要的。

Extended elliptic function expansion method is applied to construct the explicit exact solutions of the Zakharov Equation.

将改进的Jacobi椭圆函数展开法应用到Zakharov方程，比较方便地得到新的解析周期解(包含冲击波解、孤波解和双曲函数解)。这种方法也适用于其他非线性方程或方程组

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。