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gx7568573

新虫 (初入文坛)

[求助] 环境方面的英译汉

If a random sampling scheme is selected, the closure plan should provide the following:
    1. The method used for generating the random numbers.
    2. The random numbers generated.
    3. The random number grids developed for each HMWU.  Also show the random grid locations relative to the dimensions of each HWMU.
    Often a combination of bias sampling and random sampling is used in developing a sampling plan for closure of a HWMU.
    Bias sampling is often used to evaluate soils, subsoils, groundwater, wetlands,
sedimentation basins, surface waters, or other mediums that may have been impacted by the release of hazardous waste or hazardous waste constituents.   Bias sampling is used to evaluate the presence of HCOCs beneath migration pathways (cracks, seams, etc.) found in the structure or in the secondary containment of the HWMU.  Bias sampling may be used to evaluate suspected hot spots in target areas near the HWMU, potential migration of HCOCs based upon the knowledge of historical waste management activities, the conditions of the HWMUs, and location of
the HWMUs.  Bias sampling is also used for selecting the background samples.
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金虫 (小有名气)

【答案】应助回帖

gx7568573(金币+36, 翻译EPI+1): 不错 2011-11-20 22:43:45
如果选取随机取样方案,那么关闭计划应提供以下内容:
1:随机数生成方法
2:所生成的随机数
3:每个危险废物管理单元的随机数网格,并且应显示与每个危险废物管理单元规模尺寸对应的随机网格位置

一般对制定关闭危险废物管理单元的抽样方案采用随机抽样和偏倚抽样(偏差抽样)联用。
偏倚抽样一般用于评估泥土,底层土(地基),地下水,湿地,沉淀池(盆地),地表水以及其他可能被危险废物或其组分排放所影响的介质。偏倚抽样常被用于评价在危险废物管理单元结构及二次密封(安全壳)中存在的HCOCs迁移路径(如裂缝,焊缝等)。偏倚抽样也可以被用来评估在临近危险废物管理单元的目标区域中的可疑热点,基于过往废物管理活动经验知识所知的HCOCs的潜在的(可能的)迁移,危险废物管理单元的情况以及位置。偏倚抽样也用于选择背景样本。
2楼2011-11-20 16:24:29
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