本文采用能量统计分布方法研究微机械悬臂梁的噪声模型,对热机械噪声理论模型进行了拓展和修正,使之适用于低温和高频条件。
A modified model of thermal-mechanical noise is developed to make it adaptable to the micromechanical cantilever in high frequency or low temperature.
但是,如果我们知道,物质在固相,液相和气相中所有可能态的能量,统计力学告诉我们,我们可以计算这些相的平衡问题。
But again, if you know all the energies of the possible states, in the solid, in the liquid and the gas, statistical mechanics shows us that we can calculate the equilibrium between those.
通过统计所发出X光的数量,然后对照激光脉冲的频率,测量小组能得出一个非常精确的测量值,从2s能级到2p能级跃迁所需的量子能量。
By counting the number of such X-rays while scanning the frequency of the laser pulse, the team could make a very precise measurement of the photon energy required to drive the 2s-2p transition.
然后通过统计平均,得到宏观的平均能量。
And then from that, statistically averaging, what are the macroscopic average energies.
这些能量态的水平代表0或者1,就像传统计算机使用晶体管的开关状态来代表数据位0或1一样。
Those levels represent a one or zero, just as the off and on states of a transistor correspond to zero or one bits of data in traditional computing.
第二,这次能量巨大的地震影响了大规模的人群,允许这项研究完成足够的统计量来发现地震对一些例如自杀的罕见事件的影响。
Second, the large population size affected by this powerful earthquake allowed this study to achieve a sufficient statistical power to detect the impact of earthquakes on a rare event such as suicide.
实验用反向电压法近似测量了光电子的能量分布,与统计热分布明显不同。
The energy distribution of the photoelectrons is measured by means of reversed voltage method. The distribution is different from thermal distribution.
基于经验模态分解技术,采用能量评估和阈值概率统计手段,提出了一种油气两相流流型状态监测的新方法。
Based on Empirical Mode Decomposition (EMD), a new method was presented to monitor flow pattern of oil-gas two-phase flow by using energy evaluation and threshold probability statistical technique.
利用有限元、边界元和统计能量分析方法并结合软件对圆柱壳体在流场中受激振动及声辐射效率作了数值计算分析研究。
Numerical analysis of vibration and sound radiation efficiency from a submerged cylindrical shell has been carried out by using FEM methods, BEM methods and statistical energy methods.
根据统计能量分析的基本物理模型,对撞击力所做的功进行了推算。
According to the physical model of the statistical energy analysis, the work done by the impact force is calculated.
文章建立了飞机壁板隔声的统计能量分析模型,研究了外部声场激励和振动激励通过飞机壁板的隔声量,预测了飞机舱室内的声场分布。
In this paper, a model of statistical energy analysis is used to study sound transmission loss of the aircraft cabin, and predict the sound field in the cabin.
本文综述了结构声传递的四种数值计算方法:统计能量分析、有限元法、阻抗分析法、波动分析法。
Four kinds of numerical computing methods for structure_borne propagation are summarized: Statistical Energy Analysis, Finite Element method.
本文从能量观点和经验统计出发,提出两种快速评定漆包线热老化寿命的公式和方法。
On the basis of activation energy changes and experimental statistical method, we suggest two methods for the rapid estimation of thermal life of enamelled wires.
构成了此体系的非平衡统计算符,进而导出其粒子数、动量、能量、力和熵等一系列宏观方程。
The nonequilibrium statistical operator (NSO) of the system is constructed and a series of macroscopic equations for its particle number, momentum, energy, force aad entropy etc. are derived.
由于甚高能宇宙线的低流强,一直以来甚高能以上能量宇宙线时间变化的研究缺乏统计意义。
However, it lacked significance of statistical to study the time variation of the cosmic ray with even high energy before, because the cosmic ray flux with even high energy is very low.
据不完全统计,中国现阶段住宅建筑耗能量已占社会总耗能的26.5%。
According to incomplete statistics, the energy consumption by the existing housing building in China accounts for 26.5% of the total social energy consumption.
此模型由一“破坏指标”表示,它是最大变形和累积能量耗损两个参数的非线性函数,其统计特性服从威布尔分布。
This model is represented in terms of a "damage index" which is a nonlinear function of maximum deformation and accumulated energy dissipation, and follows Weibull distribution.
本文统计分析了日球基本参数及能量参数的共转变化在第20太阳周中不同位相的演变。
The evolutions of corotating variation of some basic heliospheric parameters and energy parameters are studied in this paper for the solar cycle 20.
传统的统计能量分析(SEA)理论不能解决非保守耦合系统的能量分析问题。
Traditional Statistical Energy Analysis (SEA) theory can not deal with dynamic problem concerned with non-conservatively coupled systems.
但是利用该方法有效解决实际问题的关键是能够正确估计统计能量分析参数。
However, it is the key to solve practical problems effectively using the method that statistical energy analysis parameters can be estimated correctly.
应用统计能量分析法(SEA)预测中高频段船舶噪声。
It is demonstrated that statistical energy analysis and AutoSEA could be used in the ship noise predict.
第二项是形状能量项,它保证主动轮廓在统计形状模型所允许的范围下形变;
The second term is based on the shape information, which constrains the active contour to approach a shape compatible with a statistical shape model of the shape of interest.
图像能量的统计分布是图像压缩处理的重要依据。
The statistical characteristic is the key to image compression.
结果:常规超声乳化和冷超声乳化两组病例在术后角膜内皮细胞减少等方面及超声能量使用均有统计学差异(P<0.05)。
Results: To conventional phaco and cold phaco cases, the use of ultrasonic energy and the decrease of endothelial cell are statistical differences (P<0.05).
笔者研究求解了航天飞行器仪器舱高频结构声振问题的统计能量方法,给出了用统计能量法计算的一般步骤;
The statistic energy method for solving high-frequency structural acoustic-vibration problem of high speed aero-craft is studied in this paper.
据统计,变压器的能量损耗约占系统发电量的10%,占线路损耗的50%。
Energy dissipation of transformers takes about 10% of total generated energy, and takes about 50% of line loss.
传统的统计能量分析(SEA)理论不能解决非保守耦合系统和保守或非保守耦合系统在相关输入时的能量分析问题。
Statistical Energy Analysis (SEA) could hardly deal with dynamical problems of non-conservatively coupled systems and that of systems under correlative excitations.
地震动能量衰减规律的统计分析。
地震动能量衰减规律的统计分析。
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