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|  | | 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。 | |
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| | hrough analyzing two groups of earthquakes with Ms=7. 0 happened in Chinese mainland and adjacent regions in 1976 ̄ 1988, and symmetric rhythmic model of macroseismicity in space and time distribution,application of correlation of great earthquakes are approached.It is indicated that there are three great seismic import windows in the mainland andadjacent regions,and seismic import &. export windows in the regional and interior land of China.Making use of these windows would be good f... | | 通过1976~1988年中国大陆及邻区两组Ms≥7.0级地震活动实例,借助于全国震情网络的时段预报和强震活动空间的对称韵律模式对本区大地震的时、空相关性进行实际应用的探讨后提出了我国大陆及边邻三大"地震进口窗"和我国内陆区域性的"地震进出口窗"的实用意义,长期为我国大形势预报及对华北地震的活动性估计提供有益的参考,并对该作法的物理意义进行了初步探讨。 | | 文摘来源 | | Basing on the basic principle of element dynamic analysis, the calculation formula of seismic acceleration of the sole rock under the condition of known ground seismic acceleration was derived and the calculation method of seismic acceleration of the sole rock was proposed by using of the principle of model superposition and Fourier transform. The example shows that the ground has some amplifying action to seismic acceleration and the real seismic acceleration of the sole rock ... | | 从有限元动力分析的基本原理出发,利用振型迭加原理和傅立叶变换对原理,推导了由地震地面运动加速度反算地震基岩运动加速度的有限元计算公式,探讨了地震基岩运动加速度的有限元反分析计算方法;算例表明,地层对地震运动加速度有一定的放大作用,在地下结构抗震计算中应以实际基岩地震运动加速度作为地震动输入. | | 文摘来源 | |   |
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