季节性变动

根据人工湿地的实际运行状况，以及对试验资料分析，确定人工湿地对污染物的处理效果呈现出明显的季节性变动。

According to the actual running conditions of wetland and experimental datas , analyzed and confirmed that the pollutant removal effect had obviously changed on the seasonal variation .

关于中国IPO市场季节性变动现象的实证研究

A Positivist Study of the Seasonal Changes of the IPO Market in China

需求季节性变动的血液库存系统仿真研究

Simulation of a Blood Inventory System with Time Varying Demand

西红柿价格一定程度上呈现季节性变动，但也是通胀上扬的症状。

The price of tomatoes is partly seasonal , but is also symptomatic of rising inflation .

华南前汛期是我国雨带季节性变动的一个重要阶段，常常在我国华南地区造成洪涝灾害天气。

The first rainy season in south China is an important period of annual typical rainfall variation in China , and usually results in flood in south China .

过多地提前接受订单破坏了供应链，将本应具有季节性变动的商业过程变成了一个时断时续的波动过程。

Surges of orders booked prematurely cause whiplash along the supply chain , turning what should be a business process , with seasonal variations , into a volatile stop-start journey .

郑和航线所经历的地区是世界上季风现象最显著的地区之一。盛行风的季节性变动，带来了洋流的季节性变化，为郑和航海提供了优越的条件。

The places Zheng passed by were where monsoon was very prominent , and the seasonal changes of prevalent wind would lend to seasonal changes of ocean current , thus greatly facilitating Zheng 's voyage .

2003年2~12月对福建晋江水系15个采样点的浮游植物群落季节性变动的生态特征，进行了种类组成、种群数量、优势种、污染指示种、水质等项目的调查研究。

From Feb to Dec.2003 , the seasonal changes in the ecological feature of phytoplankton community , including species composition , population size , dominant species , saprobic indicators , water quality , were studied at 15 sampling station in Jinjiang River .

这一异常的非季节性价格变动证明，我们目前所见的价格涨势十分强劲。

This abnormal and non-seasonal price movement emphasizes the powerful price move we are seeing .

水体的自净能力随季节的不同会有所差别，充分利用水体自净能力及其季节性变动，就可以有效的防治水体污染。

The water self-purification capacity changes between seasons , and if we can use the seasonal fluctuation scientifically and economically , we can prevent and cure water pollution more effectively .

运用季节指数分析方法，对1997&2001年间中国航空旅客运输市场和航空货物运输市场的季节性变动进行分析，并提出了根据季节变动规律合理组织生产和调配运力的建议。

In a seasonal index research on a market fluctuation basis , analyzes the seasonal fluctuation of air-passenger market and air cargo market from 1997 to 2001 , and in accordance with the seasonality of the market , raises some suggestions for a rational production arrangement and capacity adjustment .