污染程度

• According to the result of factor analysis , two factors which are named eutrophication and oxygen consumption are extracted , because of them the 87 . 261 % of variances are composed
  从原始数据中提取占总方差87 . 261 %的两个因子来反映水体的污染程度，经分析两个因子的物理含义分别为富营养化因子和耗氧量因子。
• This paper puts forward some methods for using soil regional geochemical data to soil quality assessment , anomaly genesis identification and soil contamination grade assessment
  在此基础上探讨了区域地球化学资料在土壤环境现状质量评价、异常成因识别、污染元素累积速率和土壤污染程度评价研究的基本思路和方法。
• The hong kong sar government and the guangdong provincial government have reached an agreement to reduce , on a best endeavour basis , by 2010 the emissions of the four major pollutants in the air , viz
  局长：我们一直在进行有关工作。石油气的士及其他措施已把本地污染程度降低了。这是可以肯定的，但区域性方面则需要时间。
• Part of the reason for this was that , while these wczs were overall not the most seriously polluted in hong kong , some embayments within the wczs in particular tolo harbour were highly sensitive to nutrient enrichment and algal bloom
  虽然区内河溪的污染程度不算特别严重，但部分内湾尤其是吐露港容易出现水质富营养化和藻类大量滋生问题。
• The dissemination and transmission of network information lack strictly verification and filtration , causing the difficulty in distinguishing the good and the bad or the true and the false information and even graver information pollution
  网络信息的发布和传播缺乏严格的审核和过滤机制，致使信息良莠不分，真伪难辨，信息污染程度日益加深。
• As we all new , mud filtrate invasion depth and pollution degree are two important parameters in the optimum perforation design . high frequency isoparametric induction logging is able to quantitatively determine the two parameters
  众所周知，泥浆侵入深度和污染程度是优化射孔设计中的2个重要参数，高频等参数感应测井资料可以定量确定这2个参数。
• Nearly half of the u . s . population lives in counties that still have unhealthy levels of ozone or particle pollution , even though there appeared to be less ozone in many counties than previous years , the study found
  研究发现，接近一半的美国人口所居住的县尽管许多县的臭氧含量似乎是比以前更少了，但至今那里的臭氧污染或微粒污染程度仍然会对健康不利。
• It is considered that soil environmental geochemical quality study should be undertaken in two aspects : current soil quality assessment and soil contamination grade assessment , the concept and aim of these two assessments being different from each other
  摘要从概念内涵和应用目标出发，认为土壤环境地球化学质量评价应该分为质量现状和污染程度两个方面。
• For the food commodity in question . dils have been set up by the radiological protection advisory group such that persons eating foods contaminated to that level over one year would not experience either short - or long - term health effects
  导出干预水平由放射防护谘询小组厘定，表示进食污染程度高达该水平的食物超过一年，也不会对健康造成短暂或长远影响。