质量基准

我们的目的是针对所有移动网络端对端测试服务质量，建立服务质量基准。

We aim to establish a quality baseline for measuring these services from end to end for all of the mobile networks .

土壤环境质量基准中Cd限量指标的推算

Estimation of cadmium limits for soil environmental quality standard

以采自福建省主要城市郊区耕地表层土壤和相应蔬菜可食用部分Cd含量的数据为依据，提出一种土壤环境质量基准中有害元素限量指标的推算方法。

A method for estimating limits of toxic elements for soil environmental quality standard was proposed based on the Cd content in the surface soils and corresponding vegetables collected from the suburbs of some main cities of Fujian Province .

调查发现，2012年有超过70%的中国人生活在PM2.5年均值高于国家健康空气质量基准（每立方米35微克）的环境中；

The study found that in 2012 , more than 70 % of the population was exposed to annual PM2.5 pollution levels higher than 35 micrograms per cubic meter , the country 's benchmark for healthy air quality .

此外，分层位（按深度）计算的SQC值结果揭示，用表层沉积物或不同层位（深度）的混合沉积物所得沉积物重金属质量基准代表某一区域或河段沉积物重金属质量基准有一定的风险性。

In addition , the SQC calculated according to depth showed that it isn 't appropriate that SQC values in a certain area or in a certain river section are represented for SQC values that are gotten from the mixed sediments of different depth sediments or the surface sediments .

建立水体沉积物重金属质量基准的方法研究进展

The Advances of Approaches for Deriving Sediment Quality Criteria for Heavy Metals

区域沉积物质量基准常用建立方法的改进与优化

Modification and optimization of current approaches for sediment quality criteria

淡水沉积物环境质量基准差异分析

The Difference and Cause Analyses of Freshwater Sediment Quality Guidelines

当代质量基准计量的研究动态

The Researching Trend of the Present Mass Standard Measurement

探讨了土壤生态地球化学，地球化学以及生态毒理学研究者对铅镉土壤环境质量基准值的研究思路。

It was discussed by the angel of soil eco-geochemistry , geochemistry and eco-toxicology .

水体沉积物重金属质量基准研究新进展&生物效应数据库法

The new advances of sediment quality criteria for heavy metals & The biological effect database-based approach

水环境质量基准、标准与流域水污染物总量控制策略

The Quality Criteria , Standards of Water Environment and the Water Pollutant Control Strategy on Watershed

海洋沉积物环境质量基准的建立是制定其质量管理环境标准的前提。

Developing marine sediment environmental quality criteria is the prerequisite for formulating its environmental quality standard .

应用相平衡分配法建立污染物的沉积物质量基准烧石灰用立窑热平衡测定与计算方法

Application of Equilibrium Partitioning Approach to Derive Sediment Quality Criteria for Heavy Metals heat balancing of kiln and furnace for lime

采用沉积物重金属质量基准，判识了黄河沉积物的潜在风险性。

The sediment quality criteria of heavy metals are used here to study the potential risk of the Yellow River sediments .

土壤铅对植物的毒害效应是确定土壤铅的环境质量基准的重要依据之一。

The toxic effects of soil lead to plants is one of the necessary basis for establishing environmental benchmark of soil Pb .

因此，至今还没有提出一种可广泛应用的沉积物环境质量基准建立方法。

This review indicates that no single approach is likely to support deriving sediment quality guidelines ( SQGs ) under all circumstances .

应用生物效应数据库法建立沉积物重金属质量基准的初步研究&以渤海锦州湾海洋沉积物为例

Research on Deriving Sediment Quality Criteria for Heavy Metals Using the Biological Effect Database Approach As Jinzhou Gulf , Bohai Sea An Example

水环境质量基准与标准是有效实施环境水质目标的主要基础和管理依据。

The water quality criteria ( WQC ) and water quality standard ( WQS ) are the managed basis for the environmental water quality control aim .

简要介绍了海洋沉积物质量基准的研究方法，重点讨论了平衡分配法在确定沉积物基准研究中的广泛用途。

The study method of marine sediment quality criteria is described and the discussion is centred on equilibrium partitioning method widely used in defining the contamination criteria .

辨析了水环境质量基准与标准的概念差异，指出了它们对水污染物总量控制的作用。

Starting from discriminating concepts , the difference between water quality criteria and standards are distinguished , and their relationship in total amount control of water pollutants is analyzed .

近年来，计量学家通过国际合作，试图基于自然的不变性质、阿佛加德罗常数和普朗克常数的概念重新定义质量基准。

Through the international cooperation the metrologists are striving to redefine the mass standard depending on unchanging properties of nature based on the concept of Avogadro constant and planck 's constant .

从土壤环境质量基准制订的方法学和污染控制标准的确定原则上，提出了制订中国土壤有机物污染控制标准的建议。

Suggestions for establishing reasonable pollution control standard for the contaminated soil in China was put forward , including its methodology for constructing soil environmental quality criteria and principles for ascertaining pollution control standard .

综述了分别用生物环境效应试验和土壤生态地球化学方法研究铅镉基准值的特点和进展。探讨了土壤生态地球化学，地球化学以及生态毒理学研究者对铅镉土壤环境质量基准值的研究思路。

This paper summarizes recent advances and characteristic in the study of the environmental quality criteria of lead and cadmium in soil both by experiment on eco-logical and environmental effects and by method for soil eco-geochemistry .

质量自然基准的研究进展及发展方向

The Progress and Development Trend of Mass Natural Standard

三氯乙酸添加量15%（以上清液质量为基准）进一步除残余蛋白质；

15 % trichloroacetic acid ( based on the mass of the supernatant ) to eliminate remnant protein ;

几十年来围绕着实现质量自然基准，各国科学家进行了大量的研究，取得了巨大的进展。

Many scientists have worked to realize mass natural standard for several decades and have got great progress in this field .

文中概述了科学工作者在这一领域的研究现状，实现质量自然基准的几种主要方法的基本原理及其研究进展，预测了质量自然基准研究的最终发展方向。

The research situation of mass natural standard in the world is summarized , the basic principle and research progress for several possible methods to realize mass natural standard are described , and the development trend of mass natural standard is given .

以坯布平均氮质量分数为基准，研究了时间、温度、pH值及碱剂用量对大豆蛋白纤维氮质量分数的影响。

The influence on the nitrogen content of the fibers of the 4 factors , duration , temperature , pH value and alkali concentration , was researched with the average nitrogen content of the grey cloth as the reference .

软件行业成本、质量和生产率基准（下）

Industry Software Cost , Quality and Productivity Benchmarks ( Part Two )