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汉语拼音：xùn qī

江河水位因降水集中、冰雪融化等季节性上涨的时期。

1. 海水及江河水位定时上涨的时期。

   明 沉德符 《野获编·河漕·海运》：“大约每岁自五月以前，风顺而柔，过此稍劲。诚以风柔之时，出并海之道，汛期不爽，占候不失，即千艘万櫓，保无他患。” 碧野 《情满青山》：“汛期前，指挥长亲自率领工程师、技术员到山区众多的小水库巡视，以免山洪暴发时溃决。”

2. 指鱼汛。某些鱼类因为产卵、越冬等缘故，在一定的时期内成群出现于一定水域。

   陈山 《蚂蚁岛的夏汛》：“这一汛期可比众不同，大部分鱼类差不多都在这个季节产卵，而且都喜欢找 舟山群岛 附近一带浅海作它们幼儿的‘摇篮’。”

• The main reason was that the operation effect of Danjiangkou reservoir for runoff was more in the low water period than in the flood period.

  主要原因是丹江口水库的调节作用，对汉江中下游径流量的影响枯水期远远大于汛期。

• The results show that the extreme heavy precipitation event frequency greatly affects the amount of total precipitation in flood season.

  结果表明：长江中下游汛期极端强降水事件发生频次的多寡很大程度上影响着汛期总降水量的多少。

• The spatial distribution of extreme heavy precipitation event frequency can be divided into five main regions.

  长江中下游地区汛期极端强降水事件发生频次的空间分布可分为5个主要区域。

• In 2007, the northernmost province of Heilongjiang reported a summer drought, which is almost unheard of in what is usually a flood season.

  在2007年，中国最北部的省份黑龙江报告了夏季干旱，这几乎是闻所未闻的事情，通常这时候是汛期。

• Shows the hole strobe arranged in dam upside, undertakes flood prevention duty during the flood season flood-fighting.

  表孔闸门布置在大坝的上部，承担汛期时的抗洪防汛任务。

• We are building up a reservoir to store the river water accumulated during the flood season, lest it might run off.

  我们正在建造水库蓄积汛期的河水，以免流失。

• the nitrogen and phosphorus pollutant of this reservoir are mainly from flood import in the flood season.

  汛期洪水输入是岗南水库氮、磷污染物的主要来源方式。

• The mean torrential rain days have increased faintly in annual, the first and second flood seasons in South China, but it is not obvious.

  华南平均年和前、后汛期暴雨日数呈微弱上升趋势，但不明显。

• On the basis of statistical analysis, we established a physical model for operational flooding prediction in the flood period in Xiangtan.

  在统计分析的基础上，我们建立了日常业务应用的湘潭汛期洪涝预报物理模型。