In China, the high rise structures load code is used for the large span spatial structures, only the first frequency is taken account for the wind vibration analysis, which is not reasonable.
我国现在仍是采用高耸或高层结构的荷载规范，只取结构的第一阶频率计算风振系数，按此方法进行大跨空间网格结构的风振分析是很不合理的。
Based on the clump intensity index, regressive analysis method and zero frequency method, the spatial distribution pattern of Latori bicolor (Walker) larvae was studied.
应用聚集度指标法、回归分析法、零频率方法对两色绿刺蛾幼虫在毛竹林间的分布型进行测定。
This paper deals with the spatial distribution patterns of the larvae of Diorycitria rubella in masson pine and loblolly pine using the frequency distribution analysis and aggregation indices.
应用频次分析法和聚集度指标法对微红梢斑螟在马尾松和火炬松林中的空间分布进行研究。
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