历时曲线 meaning in English
durationcurve
rainfall intensity－duration curve
Examples
- The results of different particle size aggregates showed that , the curve of splash erosion of aggregates of < 0 . 25mm was slowly ascending during the rainfall process , whereas , according to > 0 . 25mm , the curve was ascending during prophase of rainfall , then descending
不同粒度团聚体的溅蚀实验表明， 0 . 25mm的微团聚体，其溅蚀率历时曲线呈缓慢降低的态势；而0 . 25mm大团聚体，则是先升高再降低。 - On the basis of analysis for recharge , flow - off and drainage of research area , the paper concludes that the main possible cause for the fall of water head is groundwater exploitation by comparing the curve of rainfall - time and the curve of observation heads of some observation well
在充分分析研究区补给、径流和排泄规律的基础上，文章通过比较降雨历时曲线、部分观测孔观测水头曲线得出开采量可能是影响水头下降的主要因素。 - Scanning electric microscope ( sem ) photographs were used to examine the structure of surface soil experienced a rainstorm , for the purpose of understanding the mechanism of soil crusting . it approved that soil crusting consists of depositional crust and structural crust . the curves of infiltration with time revealed four stages of crust formation
用电子扫描显微镜( sem )照片对比了土壤表面结构，分析了土壤的结皮机理，可以认为土壤结皮是由结构结皮和沉积结皮构成，入渗量与时间的历时曲线反映了结皮的四个形成过程。 - Based on the theory of stochastic finite element , the structural parameters of frame - shear structure including stiffness and mass and damping are simulated to be stochastic variables . by solving recurrence equation of stochastic finite element , the duration curve of mean value and standard deviation of seismic response can be obtained for every floor of frame - shear structure . an analysis is thus given to the effects of independent variation and simultaneous variation of structural parameters on the seismic dynamic response of frame - shear structure . as shown by the results , with regard to frame - shear structure , the effect of variation of strucural parameters on the change of mean value are chiefly the increase of standard deviation of response . variation of stiffness will cause the response of frame - shear structure to variate greatly ; variation of mass shows less effect ; and variation of damping shows insignificant effect . the effects of simultaneous variation of various structral parametres on seismic response are only slightly greater than the effect of stiffness variation alone
以随机有限元理论为基础，将框剪结构的刚度、质量、阻尼等结构参数为随机变量.通过求解随机有限元的递推方程，得到框剪结构各层的地震动力响应均值和标准差历时曲线.分析结构参数单独变异，以及同时变异对框剪结构地震响应的影响.研究结果表明,对框剪结构而言，结构参数的变异对响应的均值变化影响都不大，主要是增大响应的标准差.刚度的变异性将引起框剪结构的响应发生大幅度变异，质量的变异性影响稍小，阻尼的变异性影响不显著.结构各参数的同时变异，对框剪结构地震响应的影响，仅比刚度单独变异的影响稍大