查询词典 Rayleigh's criterion

Both methods based on the criterion proposed by Budiansky and Roth and the Southwell method are applied to propose the dynamic buckling criterion and dynamic plastic failure criterion, which could completely define the structure elastic and plastic behavior.

这些准则能够比较完整地定义圆柱壳结构的弹塑性动力特性。

By means of three years investigation of peach-blossom cultivars found in Beijing, and based on the classification system of flower culti-vars presented by professor Chen Junyu, the author uses the branching habit as the first classification criterion, flower-form as the second criterion, and flower-color, number of petals and calyces as the third criterion.

作者在北京市桃花品种调查的基础上，以枝姿作为第一级分类标准；以花型作为第二级分类标准；以花色、花瓣数、花萼数等作为第三级分类标准。并将花瓣5枚的定为单瓣；花瓣10—40枚的定为复瓣；40枚以上的定为重瓣。

Considering seep, on foundation of stress coupling theory, use water to spend dam of force of overweighted law counterpoise and its ground system again the condition getting power in running a course actually undertakes numeric imitate, provide realer enumerated data for choppy criterion thereby, right overweighted coefficient and traditional convergent criterion criterion do comparative analysis.

在考虑渗流—应力耦合理论基础上，采用水重度超载法对重力坝及其地基系统在实际运行过程中的受力状态进行数值模拟，从而为突变判据提供较实际的计算数据，并对超载系数和传统的收敛准则判据做对比分析。

We think that recognition criteria of impaired assets are combination of two-dimensional plane of the probable recognition criterion and the economic recognition criterion, while the permanent recognition criterion is a special case in which its probability is near 100 percent.

资产减值会计极大地增强了相关性，其最大的缺陷是有所削弱可靠性，但这种所失是以提高相关性为前提的，资产减值会计必须在二者之间作出抉择；资产减值会计是在现有条件和环境下对历史成本模式的改良，是现值会计模式一定条件下的提前运用；它突破了收益确定中的实现原则；是稳健原则在资产领域重要而具体的、系统的运用。

On the base of the algorithm,the initia l power of the main motor of the MDQ 1800 low level high speed palletizer determ ined by load power is checked and modified according to time criterion, heating criterion and starting torque criterion and a new met...

在此基础上，对按照负载功率确定的初始功率按发热判据、时间判据和起动转矩判据进行了校核和修改，获得了一种高频起动的异步电动机的功率选择方法。

Rayleigh number accurately describes the liquid convection in the mushy zone and was selected as the criterion for channel segregation.

Rayleigh数很好的描述了糊状区液体流动而被作为通道偏析形成的判据。

A method for measuring the size of the dispersed spot of star sensor optical lens is presented. A measurement system consisting of a collimator, a rotary table and a CCD cameral was implemented to measure dispersed spot. After a image is acquired, a method of bibubic interpolation pixel subdivision is used to pick up the gray value of the image, and the size of dispersed spot is calculated by Rayleigh criterion.

提出了一种星敏感器光学系统弥散斑尺寸的测试方法，主要是利用平行光管、转台和CCD显微摄像系统组成弥散斑测量系统，采集图像后，采用双三次插值像元细分，提取图像中灰度值，依据瑞利判据计算弥散斑尺寸。

However, based upon the results indicated above the heat transfer rates with certain combinations of the oscillation amplitude and Rayleigh number or Grashof number are possibly smaller than that of the stationary condition. Then the critical oscillation frequency could be regarded as a criterion of whether the heat transfer rate of the heat surface subject to a oscillation motion being larger than that of the stationary state or not .

虽然一般的观念大都认为存在振动的热表面其热传的效果会比没有振动的情形下要好，但是由研究结果得知，在不同的振幅与雷利数或葛瑞秀夫数搭配时，加入振动后的热传现象仍可能比没有振动时的热传效率差，也因此可以定义且找出临界振动频率以提供研究振动热传者之参考。

Education of academical criterion is one of the basic courses which carrying the cultivation and training of academical criterion in the people who want to take the academia as career.

学术规范教育是对想以学术为志业的人进行学术规范培养和学术规范训练的一门基础课程。

Based on varying process of generator terminal parameters after excitation fault, shortages of excitation protective principle of static stability boundary and asynchronous impedance boundary are analyzed. It proposed that excitation fault research relates to large-disturbance stability. Because dynamic power-angle character of generator after excitation fault is non-sinusoidal, there are differences between dynamic power-angle character and static state power-angle character. So it isn't ideal to protective operation result based on small-disturbance stability and static stability boundary criterion. At the same time, it proposed that asynchronous boundary impedance criterion is a constant reactive power circle moving adown j Xd′. It can ensure complete loss-of-excitation generator measuring impedance enter into the circle, but can't ensure the other condition measuring impedance including impossible losing synchronism enter. So loss-of-excitation protection would be maloperation when system voltage drops short and recovers or generator rejects load.③Based on stability principle, it puts forward setting conditions and calculation method of generator loss-of-excitation protection by direct measuring power-angle.

以励磁故障后发电机端的相关参数的变化为基础，通过对以静稳定边界和异步阻抗边界作判据的两类三种现行励磁保护在原理上存在的缺陷分析，发现：励磁故障是一个大干扰稳定性问题，励磁故障后的发电机的动态功角特性与静态功角特性有很大的差异，已远非正弦曲线，因此基于小干扰稳定性原理、以静稳定边界作判据的保护必然动作不理想；异步边界阻抗判据是一个下移j Xd′的等无功阻抗圆，它可以保证完全失磁后的发电机测量阻抗能进入该阻抗圆，但不能保证完全失磁之外的其它状态不会进入该阻抗圆，因此在系统电压短时下降或发电机突然甩负荷等情况下可能启动该保护使之误动。

Metrorrhagia is also gynaecological problems of common diseases.

崩漏是妇科常见病也是疑难症。

WordFTP gives you the convenience and timesaving you need.

wordftp让您的方便和省时您所需要的。