科学家很久就注意到在大量的自然出生中有季节性的变化。
Scientists have long noted that there are seasonal variations in the number of natural human births.
分析了非对称连跨式节能温室内温度的空间分布及季节性的变化趋势。
In this paper the space distribution of temperature and the seasonal change in unsymmetrical multi-span greenhouse were analyzed.
内河涌的氨氮污染逐年严重，并呈现季节性的变化，已成为最主要的污染因子。
The pollution of ammonia nitrogen is serious year by year in inner-river and becomes the main pollution factor though its concentration varies with different seasons.
结果表明北京市主要湿地的物种组成和群落结构存在很大的差异，湿地内主要物种的重要值有季节性的变化。
The result shown that there is a significant difference in the species composition and community structure in different wetlands. The important value of wetland plants reveals a seasonal variation.
相反，诸如季节性温度变化等高频波动是可以观察到的，而且在某种程度上是可以预测的，因此群体可以相应地调整它们的行为。
In contrast, high-frequency fluctuations such as seasonal temperature variations are observable and somewhat predictable, so that groups could have adapted their behaviors accordingly.
在赤道上升流区，浮游植物的生产力很少有季节性变化。
In the equatorial upwelling zone, there is very little seasonal change in phytoplankton productivity.
反复观察已发现了一些陡坡上这种循环特征的季节性变化。
Repeated observations have tracked the seasonal changes in these recurring features on several steep slopes.
在包括阿拉伯海和印度尼西亚附近海域的低纬度地区，季节性水华往往与季风变化相关。
In lower-latitude areas, including the Arabian Sea and the waters around Indonesia, seasonal blooms are often linked to monsoon-related changes in winds.
流感病毒不断发生基因变化并需要符合正在传播的流感毒株的疫苗以便产生作用，所以每年必须调整季节性流感疫苗。
Influenza viruses constantly undergo genetic changes and require vaccines that match the circulating influenza strains to be effective, so seasonal influenza vaccines have to be modified annually.
它还揭示了冥王星像地球上一样的季节性变化。
栖息地温度的任何变化将显著影响其新陈代谢、生长速率、生产力、季节性繁殖和对疾病及毒素的易感性。
Any changes in habitat temperatures significantly influence their metabolism, growth rate, productivity, seasonal reproduction, and susceptibility to diseases and toxins.
为了检测和量化随时间推移而发生的变化，我们采用了Poisson回归分析法，并对道路伤害的趋势和季节性以及驾照扣分制度的有无进行了调整。
To detect and quantify changes over time we used Poisson regression, with adjustments for trend and seasonality in road injuries and the existence of a driver's licence penalty point system.
脑膜炎球菌性脑膜炎在全世界以小型聚集方式出现，存在季节性变化，占流行性细菌性脑膜炎的比例并不固定。
Meningococcal meningitis occurs in small clusters throughout the world with seasonal variation and accounts for a variable proportion of epidemic bacterial meningitis.
长期以来，研究植物的科学家采用卫星测量植被的新鲜指数，即观测植物反射阳光值，预测植物的状态。 植物新鲜指数的变化是季节性的。
Scientists who study plants and trees from space have long relied on satellite-derived measures of “greenness”—that is, observations of the amount of sunlight reflected by vegetation.
但是它们中没有任何一个能到达显示有季节性变化的区域。
Neither, however, will reach the areas that show seasonal changes.
季节性流感来来去去(值得注意的是，美国20%以上的人口曾感染过)，一年又一年间，流感病毒已经悄悄发生了变化。
Seasonal influenza comes and goes (typically, it affects up to 20% of America's population), with the virus evolving slightly from one winter to the next.
尽管有很大的季节性变化，但是在过去的20多年里通过大洋的风速并没有很大的变化，研究者在今天的科学杂志上报导的。
Despite large seasonal variations, the mean wind speed over the oceans hasn't changed much in the last two decades, the researchers report today in the journal Science.
利用大气月平均气候资料，利用冰海洋耦合模式对全球海冰的分布及其季节性变化、海冰漂移进行了耦合模拟和分析。
The global distribution drift and seasonal variation of the sea ice are simulated and analyzed by using the monthly climatic atmospheric data.
由四个元素的地球，空气，水和火的启发，酒吧提出了一个精心开发的鸡尾酒菜单，季节性变化。
Inspired by the four elements of earth, air, water, and fire, the bar presents a carefully developed cocktail menu that changes seasonally.
然而，直到本项试验研究才发现患有糖尿病性肾病的患者与血压相关联的肾脏功能随季节性变化而变化。
However, until this study, it was not known whether kidney function in patients with diabetic nephropathy varied with the season in relation to blood pressure.
结果表明，南沙南部海域不仅存在多涡结构，而且此多涡结构还存在明显的季节性变化。
It is shown from the computed results that there is a multi-eddy structure in the southern south China sea, and there are obvious seasonal variations in the multi-eddy structure.
文中研究了热带西太平洋暖池和西太平洋副热带高压的季节性变化和年际变化关系。
The relationship of seasonal variation and interannual change between tropical western Pacific warm pool and western Pacific subtropical high have been discussed.
分期设计洪水既要满足防洪标准，又能反映洪水的季节性变化特征。
Seasonal design flood should not only satisfy the flood prevention standard but also reflect seasonal variation characteristics.
上覆水中各形态磷浓度呈现明显的季节性变化。
The concentrations of different phosphorus species in overlying water change seasonally.
这种方法比传统极值方法更适用于无季节性变化的数据。
It seems that this method is more applicable than the traditional methods for those data without seasonal variations.
养分含量的季节性变化幅度较小。
Soil nutrition content is little fluctuation with seasonal changes.
但公司也提醒说，考虑到游客量可能有相当大的季节性变化，所以无法对今后的游客量和收益做出预测。
But it warned that, given the likely strong seasonal variation in attendance, it was not possible to predict future attendance or profits.
温特斯法可以对具有随机性、线性、季节性变化的时间序列进行预测，用温特斯法作了一次温度预测尝试。
The Winters method can be used to predict the time series that is of randomicity, linearity and(seasonal) variation.
重力场的时变有长期变化、季节性变化、不规则变化和其他多尺度的变化。
The temporal variation of it has secular change, seasonal variation, irregular variation, and other scales variation.
重力场的时变有长期变化、季节性变化、不规则变化和其他多尺度的变化。
The temporal variation of it has secular change, seasonal variation, irregular variation, and other scales variation.
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