This paper researches the key technology of High Speed PCB Machine based on the current advanced technology and the characteristic of PCB 's mechanical processing.
本文结合目前的先进技术和印刷电路板机械加工的特点对快速PC B机的关键技术进行了研究。
Based on the big-span metro tunnels, the thesis primarily studies the mechanical characteristic, the stability and the construction methods about the big-span tunnels.
本文以大跨度地铁隧道为对象，研究了大跨度隧道结构的力学特性、稳定性和施工方法。
The mechanical characteristic, power losses and allowed torque of the motor were analyzed at two cases of normal and fault-tolerance operation modes.
分析了电动机在双绕组工作与单绕组工作时的机械特性、铜损耗与允许转矩。
Mechanical characteristic of ct is studied. The model of bending, internal pressure strength and external collapse strength, diametric growth and stuck-point of ct is established.
研究了连续油管的工作力学特性，建立了连续油管弯曲、抗内压强度和外部挤毁压力、直径增长、纵向伸长及卡点位置分析计算模型。
Strap surface different material quality, Thickness and tracery decide strap 's adhesive power, Physics, Chemistry and mechanical characteristic.
皮带表面不同的材质、厚度及花纹决定皮带的附着力、物理、化学及机械特性。
An automatic, convenient measuring system for the axial mechanical characteristic of the optical disks is desirable for the optical system designers and optical disks providers.
光盘系统的开发者和光盘介质的提供者需要一种能自动、方便测量光盘轴向机械动态特性的测试系统。
According to the characteristic and the boundary conditions, the cavity roof is respectively simplified as two kinds of mechanical models (round model and ellipse model).
同时根据溶洞顶板的特征和边界条件，将其简化为椭圆形和圆形顶板两种力学模型。
The composition, structure, surface characteristic, mechanical property, and cell compatibility of the scaffold have been studied by using surface chemistry and material mechanics testing methods.
采用表面化学和材料力学方法，探讨了支架的组成、结构、表面特性、力学性质及细胞相容性。
The infrared characteristic and the mechanical properties of polyurethane coating were systematically investigated.
系统研究了聚氨酯涂料的红外特性及其力学性能。
Aimed at the problems of thick plate fine blanking process, a computational mechanics model based on its characteristic was established to analyze the mechanical state of the process.
针对厚板精冲过程中的各种问题，根据其工艺特点，建立了精冲计算力学模型，并分析了厚板精冲过程的力学状态。
It mainly introduced hardware circuit design and software program programming for high-voltage circuit breaker mechanical characteristic tester.
主要介绍了高压真空断路器机械特性测试仪的硬件电路设计和软件程序的编程。
The characteristic research and realization on bionic mechanical water strider is developing a novel bionic based on the basic principle that water strider can walk on water surface.
仿生机械水黾的特性研究和实现是基于仿生原型水黾能够在水面上行走的基本原理而开展的一种新型仿生机器人研究和设计。
The characteristic and mechanical mechanism of shaft failure under mega-thick alluvial surface layer are briefly analysed.
简要分析了位于巨厚冲积层表土下，竖井破坏的特点及力学机理。
The different mechanical impedance of matching means provide the double-tuned resonance characteristic to the transducers.
具有不同机械阻抗匹配器，为换能器提供了双调谐的特性。
In this paper, the mechanical characteristic and energy-saving principle of the chopping cascade speed regulating motor is discussed, and motor's simulation model is created.
文章分析了斩波串级调速电动机的机械特性及节能原理，建立了调速电动机的动态仿真模型。
The factors affecting the use of mechanical seals, including temperature, pressure, rotary speed and characteristic of the sealed medium, are analyzed.
分析了影响机械密封使用的几个因素，包括温度、压力、转速以及被密封介质的特点。
The relationship between wavelet ridge and instantaneous frequency is analyzed and a new method of the mechanical characteristic test of the wiper motor based on wavelet ridge algorithm is proposed.
分析了小波脊线与信号瞬时频率的关系，提出了基于小波脊线的刮水器电动机机械特性测试新方法。
Based on the coupling theory analysis of the filtration and stress field, this paper introduces the experimental research on the coupling characteristic of mechanical - jetting rock cutting.
文章基于渗流场与应力场的耦合理论分析，进行了机械与射流破岩耦合特性的实验研究。
Numerical method is proposed for general mechanical impact systems by means of characteristic line theory . Simulation results of hydraulic rock drill are provided .
应用特征线方法，提出了一般冲击机械的波动力学数值计算方法，给出了一液压凿岩机械的数值模拟结果。
In this paper, the mechanisms, processing and characteristic of mechanical alloying (ma) are briefly reviewed, and the progresses of the electrical contact materials prepared by ma is described.
介绍了机械合金化技术的基本原理、工艺过程及其特点，阐述了机械合金化(ma)制备电触头材料的研究进展。
To introduce the principle and characteristic of mechanical descaling to clear oxide scale on wire rod surface. The cause for brittle fracture with the method is analyzed.
介绍机械剥壳法去除盘条表面氧化铁皮的原理和特点，分析该方法引起钢丝脆断的原因。
The rock mass structural parameter concept consisting of the geometric and mechanical characteristic parameters being posed and the structural parameter values of rock mass at this site are presented.
文中提出了由岩体结构几何特征参数和力学特性参数所构成的岩体结构参数概念，并提供了三峡工程坝基岩体结构参数值。
According to the characteristic of transfer of magnetism and mechanical force, rare-earth permanent magnetic lifter was studied and designed.
利用磁与机械力的转换特性，进行了稀土永磁起重吊的研究和设计。
To introduce the principle and characteristic of mechanical descaling to clear oxide scale on wire rod surface.
介绍机械剥壳法去除盘条表面氧化铁皮的原理和特点，分析该方法引起钢丝脆断的原因。
The essential theory of the mechanical characteristic test of the wiper motor without torque and speed sensors is discussed in this paper.
论述了无转速转矩传感器的刮水器电动机机械特性测试基本原理；
It designs the breaker mechanical characteristic test instrument and data manage inspection system facing the spot needed.
在适应现场需要的基础上对断路器机械特性测试仪及数据管理检修指导系统进行了设计。
We used the mechanical health degree to compute the information fusion entropy value of mechanical characteristic parameter and mechanical failure diagnosis.
用机械健康度定量度量机械状态的优劣，给出机械特征参数提取和机械故障诊断时信息融合的计算方法。
The characteristic of amorphous phase synthesized by mechanical alloying(MA) was reviewed.
简述了机械合金化（MA）制备非晶的特征。
The characteristic of amorphous phase synthesized by mechanical alloying(MA) was reviewed.
简述了机械合金化（MA）制备非晶的特征。
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