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The theoretical nutations of a non-rigid Earth are computed from a convolution of the rigid Earth nutation amplitude with a transfer function accounting for the geophysical parameters influencing the Earth rotation. The value of the Earth dynamical flattening correspounds to a scale in the rigid Earth nutation series.

在刚体地球章动振幅的计算中，地球动力学扁率值起着尺度因子的作用，要改善刚体地球章动振幅的计算，需要修改目前的黄经总岁差值。

The effective diffusivity of nitrogen in nitrided metal manganese at different temperature is computed by mathematic diffusion model.

在上述渗氮条件下，各试样的渗氮结果均可较好地用扩散模型反映其相关规律。

The time-frequency representations of the EEG signals are computed by the modified pseudo Wigner distribution method. The method can reduce or remove the cross terms efficiently and perform fast.

采用改进的伪Wigner分布对脑电信号进行时频变换，这种时频分布不仅能够有效地消除交叉项，而且可以快速实现。

According to a known work frequency, the medium thickness and its dielectric constant, the micro-band line width, the sizes of the substrate, the quadrant metallic plate and high resistant surface gap are computed preliminarily then to determine its final sizes by optimizing and emulating utilizing the emulation software of HFSS8.0 edition.

根据已知的工作频率、介质厚度及其介电常数初步计算出微带线宽度、介质基片大小、正方形金属贴片尺寸以及高阻表面间距；利用电磁场HFSS8.0版的仿真软件优化仿真确定最后尺寸。有望应用于双星定位收/发集成天线及相应工作频率的电路中。

At last grid-connected PV system has also been studied, different random faults in line and protection which bring the change of operating patterns have been taken account for, indices of reliability and economics have been computed in distribution system.

最后，进行了光伏并网系统研究，考虑不同的线路及保护随机故障动作，和多变的系统运行方式，结合配电网进行相关的可靠性经济性指标计算。

Methods: From December 2002 to June 2006, 30 patients with a moderately dilated ascending aorta [mean diameter,(46.7±3.1)mm] underwent concomitant aortic valve replacement or repairing and reinforced aortoplasty with a well-tailored Dacron vascular graft. Follow-up was obtained on all patients with ultrasonic cardiography or computed tomography scan and was (18.0±10.5) months.

对2002年10月至2006年6月间采用主动脉置换或成形、升主动脉缩小成形、升主和根部背心式人工血管包裹术治疗的30例主动脉瓣病变和升主动脉扩张的临床病例进行回顾性分析和随访，平均随访时间(18±10.5)个月。

By means of the present model certain phenomena related to the nonlinear acoustic properties of an orifice, such as the roll-up of the shed vortex sheet and the forming of the Vena-Contracta are simulated. For a sinusoidal sound pressure, the time- history of the average velocity through the orifice is computed, and the nonlinear distortion of the velocity is examined by means of the Fourier decomposition.

依据此模型，对圆孔声学非线性效应的若干特征现象进行了数值模拟，如脱落涡层的卷曲，Vena收缩段的动态形成；在孔板前声压按余弦规律变化的情况下，计算了孔中平均速度的时间历程，并借助于Fourier分解分析了孔中平均速度的畸变情况。

The computed results also confirm that the streamwise vorticity pairs together with the vortex ring contribute to the formation of the side jet.

数值模拟结果还证实，流动中出现的侧向射流的形成机理要受到流向涡对和涡环的共同作用。

In the meantime, the temperature of the bus under natural cooling condition is computed by numerical calculation. If the temperature does not meet the requirement, the two schemes of forced ventilation are posed and compared. At last, the ventilating fan is selected on the basis of analysis.

针对垂直布置的母线进行了详细分析，建立了垂直布置的母线的传热模型，确定了计算母线壳体温度和导体温度的数值计算方法，并根据所得结果提出了在工程应用中可以采用的垂直布置的母线散通风方案。

Objective to appraise the diagnostic value of Exercise stress test and exercise single-photon emission computed tomography to coronary artery disease.

目的评价运动负荷心电图试验、运动负荷心肌灌注核素显像对冠状动脉病变的诊断价值。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。