比较原理

The plastic dynamic response is analyzed based on the postulate of rigid-perfectly plastic materials and energy principle in this article. The calculating method of damage parameter such as plastic deformation region and survival flections is reached. The result is compared with experiment and empirical relation.

本文基于理想刚塑性材料模型假定，采用能量原理分析了圆板和方板受接触爆炸载荷作用下的塑性动力响应，导出了破口半径的计算公式，并把结果同试验及经验表达式进行了比较，具有较好的一致性。

In this paper, the basic principle of the conventional slip energy recovery induction motor drive is discussed. Two kinds of slip energy recovery induction motor driving systems with high factors are discussed, and the performance analysis of these methods is compared. On the basis of above, a new type of three-phase and four-line slip energy recovering drive is proposed.

本文首先从普通串调原理入手，简要分析了影响串调系统功率因数的主要因素；在对三相四线双晶闸管串级调速、新型GTO串级调速等几种高功率方案进行分析与比较的基础上，提出了一种新型三相四线制双IGBT串级调速控制方案。

The principles and the types of limited slip differentials are discussed. Compared with all kinds of limited slip differential, the preload spring friction disc limited slip differential which is used as the axle bridge differential in a certain SUV is selected at last.

在总结相关资料的基础上，对防滑差速器的原理和分类情况作了分析，通过分析和比较各种防滑差速器的优缺点，最终选择了一种预压弹簧摩擦片式防滑差速器作为某SUV车型的后桥差速器。

Adequate comparison and introduction is made on the structure and moving mechanism of typical gates applied in water and power works such as curve pedestal gate, fix double_supporting point gate and fix wheel link involute gate.

对目前水电工程常用的曲线支座式、定轮双支点式、定轮连杆式渐开型闸门结构型式及运动原理进行了充分的比较和说明，并结合工程实例，对定轮连杆式渐开型闸门的设计和计算进行了详细的介绍。

On base of analyzing and comparing the merits and defaults of the utility ways of kinds iron tailing,it discusses the purpose,meaning,principles,method and ways of using iron tailing sand makes the magnetic screening function material,and prospects its application area and foreground.

在分析比较各种铁尾矿利用途径优缺点的基础上，探讨了利用铁尾矿砂制作磁屏蔽功能材料的目的、意义、原理、方法和途径，并展望了它的应用领域和前景。

This special construction is what made application of the precise light-scattering technique for the mass determination of a single irus possible.

恳请指正！该项技术原理应该比较简单吧，大家高中物理都学过了，但是我们很少想到的哦。

Firstly, the realizable ways of signal detection and sample、 power circuit and the application of low-consumption model of MSP430 are discussed, by which the required function of current protection and voltage protection can be realized. Secondly, different protection algorithm based on micro-computer are discussed in this article, and from the virtues and defects of Fourier algorithm, an improved algorithm is put forward, and the importance of the improved algorithm is displaced. Thirdly, according to the national standard of GB/T18858 .3-2002, the principle of networklization of intelligence trip relay and how to realize it are mentioned. Lastly, using the current conditions, the test of precision is done. The experimental date present that the system is working well and can realize the real-time function of on-line detection.

首先在硬件设计上，对于信号检测、处理、电源电路、MSP430系列单片机的低功耗方式应用以及人机接口电路等问题提出了实现方法，基本实现了大范围电流、电压信号实时监控等功能；其次，本文还对当前各种微机保护算法进行了介绍，分析了傅立叶算法在实现智能脱扣器保护功能中的优缺点，并针对傅立叶算法中计算偏于复杂的问题对该算法进行了改进，提出了基于FFT的改进算法，通过算法的分析和比较，对改进算法的性能给出了评价；然后结合我国现场总线国家标准GB/T18858.3-2002讨论了DeviceNet现场总线在实现脱扣器网络化的原理，实现方法，论述了通讯接口电路的设计；最后利用现有条件，对装置进行了性能测试，试验数据说明系统工作状态较好，可以满足低压配电网自动化对低压脱扣器的各项要求。

The article provides an overview of the production line equipment, technics process and technical requirements, focusing on description of the control system configuration and working principle, especially for the complex weighing material logic of transiting can.

文章概述了该生产线的设备构成、工艺流程和技术要求，重点描述了该控制系统的配置和工作原理，特别是比较复杂的中转罐称量配料逻辑。

The article provides an overview of the production line equipment, technics process and technical requirements, focusing on description of the control system configuration and working principle, especially for the complex weighing material logic of transiting can.

该生产线配置了以PCC为核心和以称量配料为主要手段的自动化系统，实现制胶、输胶过程的全自动化控制。文章概述了该生产线的设备构成、工艺流程和技术要求，重点描述了该控制系统的配置和工作原理，特别是比较复杂的中转罐称量配料逻辑。

At last, according to three-microphone method, four-microphone with two different ends method and four-microphone method, this paper compare with this three methos from principle, formula and measuring ways.

最后，针对目前驻波管法的三传感器法、改变边界条件的四传感器法和四传感器法三种隔声量测量方法，从原理、计算公式的推导及测量方法等方面进行了比较。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。