系统

When the cables use in alternating current system, rated voltage of cables should be at least equal the rated voltage of the system; When the cables use in direct current system,rated voltage should be not greater than 1.5 times of the rated voltage of the cables .

当电缆使用于交流系统时，电缆的额定电压至少应等于该系统的额定电压；当电缆使用地直流系统时，该系统的额定电压应不大于电缆额定电压的1.5倍。

This paper introduced a design example of the computer control test system of automobile alternator performance.

介绍汽车交流发电机性能微机控制测试系统的一个设计实例，给出该测试系统的基本设计要求、总体结构及其机械与电控硬件、系统功能软件模块的设计方法，讨论该测试系统的调试和特点。

It has been compiled successfully on a large range of unix flavours and amiga and win32 too.

这个软件在许多系统上已经成功的通过了编译，这其中包括unix及其类似系统、amiga系统和win32系统等。

In order to meet the higher requirements for some scientific experiment due to site conditions limitation for data acquisition system's volume,power consumption and reliability,a real-time data acquisition system based on TMS320F2812 chip was designed,which could carry out real-time acquiring and recording for analog signals output from power system.

为了满足有些科学实验由于现场条件的限制对数据采集系统的体积、功耗以及可靠性等方面所提出的较高要求，设计了一种基于 TMS320F2812芯片的实时数据采集系统，该系统可对电力系统所输出的模拟电压信号进行实时的采集和记录。

In the situation, this paper brought up the risk analysis and evaluation method on the basis of intelligent control and network communication technology for Network Communication System. The risk analysis and evaluation of Network Communication System firstly discussed the character of network communication and its risk. At the following we estimate a risk evaluation model according the distribution of the systems risk by time and space. Otherwise, we combined Fuzzy Comprehensive Evaluation with Analytic Hierarchy Process, and set up the multi-grade fuzzy comprehensive evaluation model for Network Communication System.

该方案主要通过讨论网络通信系统及其风险的特性，根据风险的时间和空间分布规律，以"风险"为整个网络通信系统安全模型的评估和分析对象，确立网络通信系统风险分布的量化评估模型，同时，就不同区域和不同时段的风险通过引入层次分析的一般方法来确定它们的权重系数，最后，通过模糊综合评判法则对系统中模糊不确定性因素进行数学化的抽象，建立一个反映其本质特征和动态过程的理想化的数学评估模型。

Nonlinear frequency response characteristics of a 2K-H planetary gearing system with multiple backlash has been calculated by using the developed analytical MDOF harmonic balance method, and has been compared with corresponding linear system. Again, influence of parameters on dynamic behavior is discussed.

通过采用本文推导的多自由度解析谐波平衡法求解2K—H行星齿轮机构的稳态响应，本文计算了间隙存在时行星齿轮系统的非线性动态特性，并就系统的非线性动态特性与线性系统的对比以及参数对行星齿轮系统动态特性的影响进行了分析。

The system is composed of an off-axis Three-Mirror Anastigmatic telescope and two Offner convex grating spectrometers.

该系统由离轴非球面三反射镜望远成像系统和两个Offner凸光栅光谱成像系统组成，通过改变两个光谱成像系统的变倍比来实现两种探测器的匹配。

Therefore, systemically research on distribution and activity of fault system in the middle part of Huanghua depression is done in this paper, including the quantitative analysis of planar distribution and activity of fault system ,the anatomization of the activity and evolution of the major fault, in order to determine the relativity and cause of the fault system. Conbined with the found reservoirs and the evidences of oil and gas displaying .The relationship between fault activity time and activity characteristic, planar distribution and the displacement type of the fault system, the contact relationship of lithology with the formation of oil and gas pools is discussed and finally the faults developing model to form oil and gas pools of upper Tertiary system are found in middle part Huanghua depression.

本论文以黄骅坳陷中区为主系统的研究了断裂系统的展布和活动特征，包括断裂平面展布与活动的定量分析、主干二级断层的几何特征和活动演化历史的详细解剖，来分析断裂系统的相关性和断裂系统的成因，并与黄骅坳陷已发现的油气藏及已有的油气显示成果结合，探讨断层的活动时间和活动特点、断层的平面分布、平面和剖面组合关系、断层两盘的岩性对接关系等方面与油气成藏的关系，最终建立黄骅坳陷中区新近系油气成藏的断裂发育模式。

The power system forced oscillation introduced by anharmonic periodic disturbances is then discussed. The effect of complicated pressure pulsation, ballistic pressure pulsation and quasiperiodic pressure pulsation on the stability of power system based on a single machine infinite bus power system and multi-machine power system are analyzed respectively through simulation.

从理论上探讨非简谐周期性扰动下的电力系统强迫振荡，并通过时域仿真分析单机无穷大系统和多机系统中汽轮机复杂压力脉动、准周期压力脉动及冲击性压力脉动对电力系统稳定性的影响。

From the information construction of engineering quality supervision management, this paper studied and analyzed the basic principles of system exploitation, constituted the measure of system exploitation which is the combination of structured method and antetype method, analyzed the application of advanced information technology in the engineering quality supervision management system.

本文从建设工程质量监督管理信息化出发，研究分析了系统开发的基本原则，制定了系统开发方法——结构化系统开发方法与原型法相结合，分析了先进信息技术在工程质量监督管理系统中的应用。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。