aggregation over time period [统计] 时期的归总
aggregation period
聚合期
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The distribution patterns of diseased plants seriousness in overwintering period and flowering stage were of aggregation distribution.
病级分布在越冬期和盛花期均为聚集分布。
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