三座塔
三座塔-
嘉兴的这三座塔最初是公元627年修建的。
The three pagodas of Jiaxing were first built in627 AD.
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三座塔是圆形，其他都是方形。
Three towers are round , while the others are square in shape .
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以不同高度的三座输电塔为例，在三类不同的场地条件下，分别对输电塔-线体系及桩-土-输电塔-线体系进行了地震反应分析和对比。
Based on three transmission towers with different height , the seismic response of the pile-soil-transmission tower-line system is calculated and compared with the transmission tower-line system under three different site conditions .