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the equivalent mass
相关语句
  等效质量
     4. Relation between the equivalent mass factor of structure and periods of structures on different sites.
     4.结构等效质量系数与场地和结构周期的关系。
短句来源
     The expression of the equivalent mass and equivalent impedance on a side of the transducer are educed, moreover, the expression of mechanical quality factor and band wide are obtained .
     推导出在同一参考面穿孔换能器的等效质量、等效电阻的表达式,进一步得到换能器的机械品质因数和带宽的表达式,得到穿孔尺寸与这些参数之间的关系,从而设计出宽频带换能器。
短句来源
     DETERMINATION OF THE EQUIVALENT MASS AND STIFFNESS OF DYNAMIC MODEL OF MECHANISMS VIBRATIONS
     机构振动动态模型的等效质量与等效刚度的确定
短句来源
     Research on the Equivalent Mass of Spring
     弹簧的等效质量研究
短句来源
     2.To the circular plate working in axial symmetry vibration at resonant frequency, the equivalent mass in analytical form is derived, that's is,, and further, the equivalent compliance is obtained using the formula C = 1l 2 M .
     2.对于工作在谐振频率下做轴对称运动的阶梯圆板,采用解析法求得它的等效质量,并由C=1/ω~2M求得等效弹性系数。 采用解析法求得它在谐振频率下工作时的辐射阻抗为,在此基础上可以得到阶梯圆板的等效电路。
短句来源
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  电子等效质量
     A model is built to correct mass stopping power of the electron. The equivalent mass stopping power of the electron is calculated theoretically using the corrected model.
     在此基础上建立了电子质量阻止本领的修正模型 ,理论上计算出电子等效质量阻止本领 ,给出单能电子的注量。
短句来源
  “the equivalent mass”译为未确定词的双语例句
     At first, the article introduces the method to test the equivalent mass, the static moment of resistance, and the braking deceleration of the brake system and to examine the speed and the force of the hoisting system.
     文章首先介绍了提升机闸控系统的变位质量、静阻力矩、制动减速度以及提升系统的运行速度、拖动力的测试方法,然后依据作者提出的检测方法,得到闸控系统的制动力矩、空动时间和制动运行距离等参数。
短句来源
     :Heat Balance Equations and the Equivalent Mass of the Heated Metal in Boiler Dynamic Models
     锅炉动态模型中能量平衡方程及受热面金属的当量质量
短句来源
     However,with inlet distortion the pressure ratio of this compressor rotor is improved 1.8 percent and the equivalent mass flow reduced 2.5 percent at near-stall condition in comparing with clean inlet flow.
     与均匀进气的情况相比,压气机转子压比提高了1.8%,近失速点换算质量流量减小了2.5%.
短句来源
     However,the absolute angle is not changed obviously at rotor inlet when the equivalent mass flow is reduced,but it is increased obviously at rotor outlet.
     并且,随着换算质量流量的减少,转子进口绝对流动角变化不明显,而转子出口的绝对流动角则明显增加。
短句来源
     Because the measurement of the burnout time of a coal char particle is easy and accurate, the data of the equivalent mass diffusivities so obtained should be reliable.
     由于煤焦粒的燃烬时间的测定较准确,因此所得之等效扩散系数较可靠。
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  the equivalent mass
The albedo of melting particles are nearly less than the equivalent mass raindrops albedo at the Ka and mm-band of f >amp;gt; 20GHz.
      
The objective of the suspension design is to decrease the equivalent mass with increasing first torsional frequency.
      
The equivalent mass of 30 micron diamond, a size typically used in cutting wheels, is 22 tons.
      


This paper deals with the optimal dynamic design of the bearing system. Under the constraints that no characteristic frequency of the rotor-bearing system falls into a specified frequency region and others, the dynamic flexibility of the system as obiective function approaches minimum or allowable value, that is, to possess stronger ability to resist vibriation of the forced bending, with parameters of the system(stiffness coefficient, damping coefficient and mass) taken as design variables. The interaction...

This paper deals with the optimal dynamic design of the bearing system. Under the constraints that no characteristic frequency of the rotor-bearing system falls into a specified frequency region and others, the dynamic flexibility of the system as obiective function approaches minimum or allowable value, that is, to possess stronger ability to resist vibriation of the forced bending, with parameters of the system(stiffness coefficient, damping coefficient and mass) taken as design variables. The interaction of the rotor and the bearing is put into account during the optimizing process. To simplify the optimizing process, a converse solution method for determining the values of dodged stiffness and damping coefficients to avoid resonance is proposed.As a result,the behaviour constraints can be transformed into the boundary ones. Meantime, 2-grade optimization approach is employed. The rearing system as a sub-system is connected to the entire rotor-bearing system by an equivalent mass of the rotor at the bearing. The equivalent mass of the rotor is obtained by means of equivalent kinetic energy and iteration technique. An numerical example is provided at the end of the paper.

在避免轴-轴承系统共振和要求系统抑制强迫振动能力强的条件下.选择轴承系统的有关参数(刚度、阻尼系数、质量)使动柔度最小。考虑了两轴承系统及轴之间的相互影响。为简化优化过程,采用两级优化;应用求回避刚度、回避质量(即设置回避变量禁区)的逆求法,把上述非线性规划问题中隐式性能约束化为箱式约束(上下限约束)。给出了一个高速离心机的算例。

In this paper, according 'to the results of earthquake response analysis for more than 3000 structures,the following problems were discussed,1. Relation between the maximum elasto-plastic story displacement and story yield strength in structures during earthquake.2. Problems of controlling displacement of structure to prevent collapse of structure.3. Relation between distribution of earthquake load along height of structure and periods of structures on different sites.4. Relation between the equivalent mass...

In this paper, according 'to the results of earthquake response analysis for more than 3000 structures,the following problems were discussed,1. Relation between the maximum elasto-plastic story displacement and story yield strength in structures during earthquake.2. Problems of controlling displacement of structure to prevent collapse of structure.3. Relation between distribution of earthquake load along height of structure and periods of structures on different sites.4. Relation between the equivalent mass factor of structure and periods of structures on different sites.

本文根据不同周期的结构3000多个地震反应的算例,讨论了下列几个问题: 1.地震时结构楼层最大弹塑性变位与结构楼层屈服强度的关系; 2.控制结构变位防止结构倒塌问题; 3.地震荷载沿结构高度分布与场地和结构周期的关系; 4.结构等效质量系数与场地和结构周期的关系。

This paper makes a comprehensive discussion of the well-aquifer system and water level observation system, and from the oscillation theory, has developed the oscillation equations with two degrees of freedom for these two systems. With the possible solutions to this set of equations, this paper discusses the factors that affect the response of these two systems to seismic waves and earth tides. It is considered that the above-mentioned response mainly depends on the intrinsic periods of these two systems. Theoretical...

This paper makes a comprehensive discussion of the well-aquifer system and water level observation system, and from the oscillation theory, has developed the oscillation equations with two degrees of freedom for these two systems. With the possible solutions to this set of equations, this paper discusses the factors that affect the response of these two systems to seismic waves and earth tides. It is considered that the above-mentioned response mainly depends on the intrinsic periods of these two systems. Theoretical analysis shows that, as to seismic waves, as the aquifer's transmissibility gets greater, the effective height of the well water column get bigger, the equivalent mass of the observation instruments gets larger, the radius of the buoy section gets bigger and the radius of the well casing section gets smaller, the amplification of the system's response gets larger. But these factors exercise small effect on the response of earth tides of long periods. It is also pointed out that under certain circumstances the period of the water level observation system may play an important role, which should not be neglected in research and analysis.

本文把水井含水层系统和水位观测系统联系在一起综合进行讨论,从振动学理论推导出这两个系统的二自由度振动方程组。从这个方程组的一些可能的解讨论了这两个系统对地震波和固体潮响应的影响因素。 认为水井含水层系统与水位观测系统对固体潮与地震波的响应,主要取决于这两个系统的固有周期。 理论分析表明,对于地震波来说,含水层的导水系数越大,水井水柱的有效高度越大;观测仪器的等效质量越大,浮标截面圆半径越大;井管截面圆半径越小,则系统响应的放大倍数越大。但是,这些因素对于长周期固体潮响应的影响很小;并指出在某些情况下水位观测系统的周期可起重要作用,在研究分析中不应忽视。

 
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