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The micro vehicle rear axle of car main gear box noise question became the worker matter of concern. In this paper, the micro vehicle rear axle of car main gear box noise performance present situation and the traditional assessment method are discussed, and the general BP neural network and the Levenberg-Marguardt algorithm are introduced in detail. Improves the BP neural network using the LM algorithm, at present is trains the neural network the quickest algorithm.

微车后桥主减速器噪声问题成为工作者所关注的问题，本文介绍了后桥主减速器噪声性能现状及传统评价方法，阐述了BP神经网络的一般算法，并详细介绍了Levenberg-Marguardt算法，利用LM算法来改进BP神经网络，目前是训练神经网络的最快算法。

In this paper the magnetic distribution character of micro-electro-mechanical relay was analyzed by applying Biot-Savart law and integral equation method. The results of IEM and FEM show the method which used in analyzing three-dimensional stationary magnetic field for Micro-electro-mechanical relay is feasible.

文中应用毕奥-萨伐尔定律和积分方程法，分析了微机械电磁继电器磁场分布特性，计算结果与有限元法结果进行比较，表明所用方法对于微机械电磁继电器三维恒定磁场的分析是可行的。

But the uncertainty of instruction flow branch behavior affects the fully development of the pipelines performance, which is solved with the appearance of branch prediction to great extent. Excellent branch prediction technology, which can effectively improve the efficiency of fetching instruction of micro-processor, is the basic guarantee of the improvement of micro-processor.

但指令流分支行为的不确定性影响了流水线性能的充分发挥，分支预测技术的出现在很大程度上解决了这一问题，良好的分支预测技术能有效地提高微处理器的取指效率，是微处理器性能提升的基本保证。

Effect of the variation of micro structures in each zone of HAZ, and micro hardness by flash butt welding was analyzed.

讨论了焊接HAZ组织演变的过程，分析了闪光焊HAZ各区段的显微组织、显微硬度的变化。

The exchange film can be used in micro direct carbinol fuel battery with high stability good for reducing battery sizes to improve utility of micro liquid fuel materials.

使得用本发明进行改性处理的质子交换膜可用于微型直接甲醇燃料电池，可使微型甲醇燃料电池稳定性得到提高，有利于单体电池尺寸的进一步减小，促进微型液体进料直接甲醇燃料电池的实用化。

The mask applying to experiment is opened up and that the mask exposure's device is designed and done. The technologic flow of the MEMS unit's manufacture combining optical score, sacrifice layer, chymic deposit with the SL prototyping technology is researched and experimental sample is done. Taking 3D capacitance micro actuator done by RP technology as a example, the main point of the manufacturing technics is illuminated, the new way manufacturing complex micro mechanical structure is explored.

在介绍了微电子机械系统基本情况的基础上，首次提出了将RP技术应用于MEMS的思想以及平面掩膜式光固化快速成型方案；开发了实验用掩膜，设计并制作了平面曝光成型的实验装置该装置；首次研究了将光刻技术、牺牲层技术、化学淀积镀膜与光固化快速成型制造技术等相结合，来制作MEMS件的工艺流程，并制作了实验样件。

The author analysis the inherent link between the circular economy and the adjustment of the industrial structure, then adjust the industrial structure through transforming the value chain at the micro-enterprise level and building eco-industrial park at the meso-level based on the micro, meso and macro levels of the circular economy. All the transformation is to promote the development of circular economy and to change China's economic development model. Doing this, we want to change the traditional products economic

本文从系统的角度，分析发展循环经济与产业结构调整之间的内在联系，以循环经济发展的微观、中观、宏观三个层次为基础，通过微观企业层面上改造价值链和中观层面上构建生态工业园来调整产业结构，推进循环经济发展，改变我国的经济发展模式，使我国从传统的产品经济模式，向资源经济模式转换，进而实现循环经济在整个社会层面上的大循环，从而找到在全社会建立一种以循环经济发展模式为核心的可持续发展的社会-经济系统的具体实践。

The working table is very strength by using AL Alloy Honey Comb, it is no need to install extra lock system because of installation of handle of micro head type, and it is very simple and precise to adjust micro size.

它具有铝合金蜂窝组成的高强度工作台，装有微型调节按钮，因此无须有LOCK装置，调节更加精确方便。

Oslash; The working table is very strength by using AL Alloy Honey Comb, it is no need to install extra lock system because of installation of handle of micro head type, and it is very simple and precise to adjust micro size.

Oslash；它具有铝合金蜂窝组成的高强度工作台，装有微型调节按钮，因此无须有LOCK装置，调节更加精确方便。

Micro combustor is one of the most important components of micro thermophotovoltaic system.

微燃烧室是微热光电系统的一个重要组成部分。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。