查询词典 working-class

According to the working principle of the 195B/280B power shovel , the working principle of FCM and its internal structure and functions of windings are analyzed.

从195B／280B电铲的工作原理出发，分析了电铲的电气控制核心──触发电路组件的工作原理，及其内部结构和各绕组的作用，介绍了研制中所遇到的几个实际问题，并给出了实际应用情况。

Mathematical models of shearer parameters and noise of coal working face, shearer parameters and temperature of coal working face were established according to appropriate hypothesis and predigestion. Based on established models, corresponding simulation programs were compiled, and simulation research was proceeded.

通过必要的假设与简化，建立了采煤机参数与工作面噪声和温升之间关系的数学模型，编制了相应的计算机模拟程序，利用所建模型进行了模拟研究。

Countering the serious wear on plain bearing bush of the primary lathe axis supporting,and the reducing of working precision,change to the ball bearing ,thus increase the working precision of the product.

针对原车床主轴支承滑动轴承轴瓦严重磨损，加工精度降低，改用滚动轴承支承法，从而提高了产品的加工精度。

In this paper, in view of the working condition of common principal axes and the exothermic situation, the uneven and steady temperature field of the principal axis system during the working process is described.

主轴是机床或仪器等精密机械的核心构件，它也是影响精度的主要因素，主轴系统的热变形对机械的工作精度影响也很大。

In this topic, the dynamic analysis methods for piezoelectric vibrator are studied systematically based on the theoretical model, FEM numerical experimentation and FEM governing equation for given compound-mode vibrator, and some valuable conclusions are obtained. The main work accomplished is summarized as follows: 1.Elaborate the main modeling methods for piezoelectric vibrator and the significance and necessity to study the dynamic characteristics of piezoelectric vibrator which emphasize the urgency of this paper. 2.Take the bending deformation induced by piezoelectric ceramic as example, the energy transfer mechanism of electric energy to mechanical energy are analyzed; the motion and force transfer mechanism are analyzed for the longitudinal-bending vibrator. 3.Based on mode assumption and Hamilton principle, the coupling model of piezoelectric vibrator of linear USM is built; moreover, the equivalent circuit model is obtained and a coupling equation represents the relation between electric parameters and mechanical parameters is derived which provides foundation to match the vibrator and driving circuit. 4.Combine the constitutive equation of piezoelectric ceramic with elastic-dynamical equation, geometric equation in force field and the Maxwell equation in electric field and the corresponding boundary condition equation, the FEM control equation for piezoelectric vibrator of USM to solve dynamic electro-mechanical coupling field is established by employing the principle of virtual displacement. The equation lays the foundation to study the non-linear constitutive equation of piezoelectric ceramic driven by high-power. 5.Define the dynamic indexes of characteristic of vibrator and carry out variable parameters simulation by calculating the model parameters and the electric characteristics of vibrator are simulated according to the equivalent circuit model. By numerical experimentation, the working mode of vibration of vibrator and the shock excitation results of the working frequency band which provides the mode frequency to realize bimodal are analyzed. Detailed calculation of the electro-mechanical coupling field parameters is made by programming the FEM control equation.

本课题从理论模型、有限元数值试验、有限元控制模型等方面以复合振动模式振子为例对超声电机压电振子的动力学特性及其分析方法进行了全面系统地研究，得出了许多有价值的结论，主要概括如下： 1、阐述了目前针对超声电机压电振子的主要建模方法，对压电振子动态特性的研究意义和必要性进行了论述，突出了本文研究内容的迫切性； 2、以压电陶瓷诱发弹性体发生弯曲变形为例，分析了压电陶瓷通过诱发应变来实现机电能量转换的机理；对基于纵弯模式的压电振子的运动及动力传递机理进行了分析； 3、基于模态假定，利用分析动力学的Hamilton原理，建立了面向直线超声电机压电振子的机电耦合动力学模型，并据此建立了压电振子的等效电路模型，导出了电参量与动力学特性参量的耦合方程，为压电振子与驱动电路的匹配提供了依据； 4、从压电陶瓷的本构方程出发，综合力场的弹性动力学方程、几何方程、电场的麦克斯韦方程以及相应的边界条件方程，采用虚位移原理，建立了压电振子动态问题机电耦合场求解的有限元控制方程，为研究其大功率驱动下的非线性本构模型奠定了基础； 5、界定压电振子的动力学特性指标，对压电振子的机电耦合动力学模型参数进行计算及变参数仿真；依据等效电路模型，对压电振子的电学特性进行了仿真分析；通过有限元数值实验，对压电振子工作模态附近的模态振型及工作频率附近的频段进行了激振效果分析，找出了实现模态简并的激振频率；利用有限元控制方程，通过编程计算，对压电振子的力电耦合场参数进行了详细计算，得出了一些有价值的结论。

As we all know, I have the professorial abilities about this area, the rich working experience of Incoloy , and I have a good understanding of this market and other competitors plus I have a high efficiency of working style.

以我对朗讯设备的专业能力、丰富的INOC经验，对国内外同行业都有着很深了解，并且有主动高效的工作风格，这个工资水平一定是物超所值的。

So it is very important to undertake normal working of the coal spontaneous combustion experimentation system. The research content of this programer is to carry out fault diagnosis of the coal spontaneous combustion experimentation temperature control system and predict its working condition tendency.

而进行煤自然发火实验可以研究煤自燃原因、自燃升温过程规律性，因此煤自然发火实验系统的正常运行关系重大，本课题研究内容就是对煤自然发火实验台温度控制系统进行故障诊断，预测预报其运行状态趋势。

Children's working memory is increasing stably, and it has high correlations with crystallised intelligence and fluid intelligence, and there is also high correlation between working memory and one of general creativity's dimensionalities, Promethean.

儿童的工作记忆水平随年龄的增长呈稳定的增长趋势，儿童的工作记忆和晶体智力有极其显著的相关，和流体智力也有较高的相关，和一般创造力的独创性维度有较高的相关。

Please inform all of your staff members working in 9/BLDG to have their fingerprints recorded at the Computer Department tomorrow because a puncher for fingerprints shall be used to replace the used card-prints of those working in 9/BLDG.

请转告你们部门所有在9栋上班的职员明天到电脑部录指纹。请他们准时过来。

I also learned that the Puritanical devotion of working hard is not nearly as valuable as working smart.

我也知道了清教徒"辛勤工作"这种信仰比不上"聪明工作"有用。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷