基于已建立的小型铯原子钟计算机模型系统，研究了铯束原子速度为双峰分布和三峰分布对原子钟微波频谱的影响。
Based on a numerical model cesium atomic clock designed before, the influence of atomic velocity distribution consisting of two peaks and three peaks has been studied respectively.
本文从强震持时、频谱特性和能量分布峰态系数等三个方面对地震地面运动规律进行综合分析，提出了一种较为客观的地震地面运动分类方法。
In this paper, the law of earthquake ground motion is analyzed comprehensively by taking account of duration, frequency characteristic and peak index of energy distribution.
SHELLCV程序包含三角形壳元和矩形壳元两种单元，可以模拟复杂形状三维薄壁构件的RTM制造工艺注模过程，得到任意时刻的树脂流动前峰曲线、压力场分布。
SHELLCV can simulate the process of mould-filling in RTM for the 3d complex shape thin parts and predict the resin flow front advancement and the distribution of pressure field at any instant in time.
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