查询词典 contamination

Lots of factors,such as the virus infection, the acarid and dust in the room, the blackbeetle, the tobacco smoke, the air pollution, the chemical stimulation and the like , can trigger bronchial asthma. The contamination of suspending particulates with the diameter less than 2.5 micron in the atmosphere is the main reason that makes mortality ascend,for the contamination can aggravate the hypersusceptibility which embitter more and more people .

支气管哮喘也称哮喘病，病毒感染、室尘螨与蟑螂等变应原触发因素，以及烟草烟雾、空气污染、化学刺激等均可引起发病，大气中直径不足2.5微米的悬浮微粒污染物是导致死亡率上升的因素，微粒污染会加剧人体过敏反应，全球遭受过敏之苦的人数正与日俱增。

So we researched the relationship between the acraldehyde contamination and cooking activity. We choose four time, 9:00 and 15:00 the cooking activity is very few, so the contamination is low, but 11:30 and 17:30 the contamination is very high, this concentration is 2.6 times an much as the front one.

检测结果表明丙烯醛的浓度和烹饪活动的多少有密切的关系。9：00和15：00食堂内烹饪活动比较少，丙烯醛的浓度明显降低，而11：30和17：30是两个就餐高峰，在这两个时间段内餐厅内的丙烯醛浓度明显升高。

Each lot of a component, drug product container, or closure that is liable to contamination with filth, insect infestation, or other extraneous adulterant shall be examined against established specifications for such contamination.

每批易受污物、昆虫或其他外来杂物污染的某一成份、药品容器或密封件，应按照已制订的规格标准检验上述各种污染。

Air pressure differentials should be such that there is no flow of air between the work area and the external environment or risk of contamination of outer clothing worn outside the area; f an air lock system for the passage of equipment, which is constructed so that there is no flow of contaminated air between the work area and the external environment or risk of contamination of equipment within the lock.

f 设备的进出要有气闸系统，其结构要保证没有工作区和外界环境之间污染空气的流通，或气闸室里的设备没有被污染的风险。

Earthworms might be a good bioindicator for the contamination of roxarsone to soil. No significant influence of roxarsone contamination upon the biomass and the reproductive ability of earthworms was found, which indicated that earthworms could tolerate heavy contamination of roxarsone. 2. Effects on the important enzymatic system of earthworms The activities of PROD, BROD and MROD in P450 family were inhibited.

对蚯蚓体内重要酶系统的影响洛克沙胂对P450酶系中的PROD（7-戊氧基异吩噁唑酮-O-脱乙基酶）、BROD（7-苄氧基异吩噁唑酮-O-脱乙基酶）和MROD（7-甲氧基异吩噁唑酮-O-脱乙基酶）的活性都有抑制作用，对MROD的抑制作用最明显；在抗氧化酶系统中，对过氧化氢酶在整个试验进程中都有激活作用，而对其他抗氧化酶有时起激活作用，有时起抑制作用，规律性不明显。

There is a long standing debate about the magma origin of Lutao. Two different models of crust contamination and source contamination are proposed. Combining helium results with strontium ratios of Lutao lavas, it shows that Lutao arc magma has experienced approximately 5% of crust contamination.

绿岛岩浆成因长久以来存在有地壳混染或是源区混染的争论，本研究利用绿岛斜辉石及堇青石巨晶的3He/4He比值及其母岩浆的87Sr/86Sr比值，得到了绿岛岩浆经历过5%左右地壳混染的结果。

objiective:to investigate the causes of the contamination of dialysis fluid.methods the level and species of bacteria were detected.results:the pathopoiesis bacteria and pathopoiesis bacteria in condition were identified in dialysis fluid,fluid b.offlake of soft water and preparing container.conclusions the contamination of'dialysis fluid is related with the untimely change of the filter in soft water machine and membrane of reverse osmosis,the contamination of fluid b.

目的：调查透析液和透析用水细菌污染的原因。方法：按《医院感染管理规范》的要求检测并鉴定致病菌。结果：透析液和透析用水、b液、软水口、配液容器培养出致病菌和条件致病茵。结论：血液透析液和透析用水细菌污染与软水机过滤器和反渗膜使用时间过长引起破损，未能及时更换，以及b液配制过程中细菌污染有关。

Based on the water environment spatial data mining and visualization method, the paper presents these main characteristics and innovations:①Measurement of contamination fluxes:A scene-based research strategy is proposed:measurement /water quality analysis→flow field simulation→contamination transformation rule→fluxes scene simulation→temporal-spatial rule analysis.②Serial numerical models of water environment in the Qiantang River:The controlled equations of the flow field model of the main river,united controlled equations of the main contamination fluxes and water quality prediction model at emergent time are set up.③GIS-based water quality and contamination fluxes decision-making assistance system:A water environment database has been set up;based on MapX and C#.net platform,a system has been developed to facilitate visual inquiry,decision-making and graphics export.

本文基于水环境空间数据挖掘与可视化的研究方法与体系，研究中的主要特色与创新点为：①河流污染物通量测算的技术与方法：提出了基于工况测量/水质分析→流场模拟→污染规律解析→通量情景模拟→时空规律分析的研究方案；②钱塘江水环境模拟系列数学模型：建立了钱塘江干流研究区域流场数学模型的控制方程、主要污染物通量模型的联合控制方程、突发污染事故水质预报模型的基本方程；③基于GIS的水质预报与污染物通量决策支持系统的研发：建立水环境时空数据库，基于MapX和C#。net平台进行系统的构建与开发，为研究的系列成果提供可视化的查询、决策与图形输出。

There are two basic and conventional contamination accumulation modes,one is the common slow contamination accumulation and the other is a sea fog type of rapid contamination accumulation with high conductivity that naturally takes place in coastal areas.

在常规的缓慢积污和沿海的、自然的、高导电性的海雾型快速积污2种基本积污形式之外，内陆地区出现与人类活动相关的、高导电性的降水降雪型快速积污。

The formula concerning how to control the oil contamination of coal mining machine hydraulic system was built based on the theory of the contamination control ,it is shown that the change of the oil contamination is in index regularity.

根据污染控制理论导出了采煤机液压系统油液污染控制方程，由方程知液压系统油液污染度的变化是按指数规律变化的，并分析了影响采煤机液压系统油液污染度的主要因素，提出在液压系统的设计阶段就要考虑液压系统的过滤净化性能，正确控制液压系统油液污染。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。