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li yong bo dong chang de li lun jie dian fa kan tan zheng wen ti
Author(s): 
Pages: 51-53
Year: Issue:  2
Journal: Geotechnical Investigation & Surveying

Keyword:  波动场直流电法勘探拉普拉斯方程波动方程反射系数正问题波动函数拉普拉斯算子表征直流电场;
Abstract: <正> 任何波动场均可用下列波动方程所表征:▽~2φ=(1/c~2)((?)~2φ/(?)t~2)(1)式中:φ——波动函数; c——波速; t——时间; ▽~2——拉普拉斯算子。当(?)~2φ/(?)t~2=0,亦即φ函数为时间的线性函数或常量时,(1)式转化为拉普拉斯方程:▽~2φ=0(2) 因之,可以看出拉普拉斯方程为波动方程之特例,式(2)的解亦必为式(1)的特解:
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