Thermal-structural analysis was performed for ultrasonic wire bonding(UWB) by three dimensional finite element method(FEM).
用三维有限元方法对超声波线焊进行了瞬态的热-结构分析。
By simulating the features of two -, three -, four-high mill with finite element method, the geometric shape, micro-structure and mechanical property of wire section are analyzed.
分析了用有限元法模拟线材二辊、三辊和四辊轧机轧制的特点，对线材断面的几何形状、微观组织和机械性能进行了介绍。
New variable is introduced based on energetic equation, the period of vibration of three wire pendulum is studied using the method of rotating vector.
由能量方程出发，引入新变量，用旋转矢量法讨论了三线摆大角度摆动时的周期。
Simulations using numerically calculated scattering response based on three thin wire target demonstrate that the method proposed in this paper is surprier to the traditional E-pulse.
基于三种细导线目标数值计算散射场的仿真实验表明，相比于传统E脉冲能量识别数，本文方法取得了很好的识别效果。
A descriptive geometry method is presented to obtain the track of wire incision in processing the three dimensional cut.
提出了确定嵌入式三维接口线切割轨迹的画法几何方法。
This paper introduces the programming method for machining equal length three are hole on numerical control wire-machine tool by 3B format.
介绍了在数控线切割机床上加工等距型三弧孔的3B格式编程方法。
The experimental results show that the detection method based on the FBD method can be used in unbalanced three-phase three-wire power systems.
实验结果表明，可以用在不平衡三相三线电源系统的检测方法基于FBD法。
Experimental results prove the proposed control method can compensate the harmonic, negative sequence and zero sequence current components in the three phase four wire.
实验结果表明，该装置可对三相四线制系统中的谐波、负序、零序等电流分量进行补偿。
The experimental results indicate that this method can be used to detect the reactive power and harmonic current exactly in three-phase four-wire system.
通过试验验证，该检测方法能够很好的实现对三相四线制系统中的无功和谐波电流的检测。
The signal pre-processing system also has circuit to extract temperature signal via platinum thermistance, in which three-wire system and constant current measurement method are adopted.
信号预处理系统还包括温度信号提取电路，通过铂热敏电阻实现对温度信号的提取，采用了三线制恒流源测量法。
First of all, current detection method for three-phase four-wire system is researched.
首先，本文针对三相四线制的电流检测方法进行了研究。
The wire connection method of the three-phase capacitor adopts triangle connection method or star connection method.
三相电容器的接线方式采用三角形连接或者星形连接。
The invention provides a method for rolling of titanium and titanium alloy bar and wire rod with three-roller Y continuous rolling mill.
本发明提供了一种应用三辊Y连轧机轧制钛及钛合金棒线材的方法。
The invention provides a method for rolling of titanium and titanium alloy bar and wire rod with three-roller Y continuous rolling mill.
本发明提供了一种应用三辊Y连轧机轧制钛及钛合金棒线材的方法。
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