目的：揭示脑出血发病时间的季节周期性和日变化规律。
Objective: To explore the seasonal and circadian variation in the timing of cerebral hemorrhage.
水位随季节周期性消落，将导致水体相和沉积物相中的总汞浓度按枯、丰、平顺序依次递减。
As the result of seasonal fluctuation of water, the total Hg concentration of water and sediment would be degressive in sequence of low water, flush time and ordinary level.
有一些流量趋势是周期性的，比如，工作日的流量比周末的流量大，或者是夏天月份的流量比其他季节流量低。
Some traffic trends are cyclical, e.g. there is more traffic during the week than the weekend or the summer months are slower than non-summer months.
杜兰用自己最喜欢的研究工具谷歌地图指出，因为农业耕作，就业波动更像是季节性的而非周期性的。
Fluctuations in the job market tend to be seasonal rather than cyclical because of the agricultural calendar, a point that Mr Duran illustrates with his favourite research toy, Google Earth.
巫术崇拜者以一个整体“进入”周期循环：周期性的生命、周期性的月亮和季节。
Wiccans as a whole are very much "into" cycles: of life, of the moon and seasons.
有明显的季节性和周期性。
There were obvious seasonal and periodic features in rubella incidence.
汛是指江河等水域的季节性或周期性的涨水现象。
Flood period is seasonal or periodic flood rise phenomenon of rivers.
浅海区和深海区的海平面季节尺度变化在周期性与强度上存在明显差异。
The sea level variations show significant differences at inter-seasonal scales between shallow sea and deep-sea.
由于家用空调行业销售具有明显季节性特点，其经销商管理呈现周期性循环的特点。
Because selling of the home air conditioner trade has the obvious seasonal characteristic, its distributor management presents periodic return.
由于家用空调行业销售具有明显季节性特点，其经销商管理呈现周期性循环的特点。
Because selling of the home air conditioner trade has the obvious seasonal characteristic, its distributor management presents periodic return.
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