The water quality criteria (WQC) and water quality standard (WQS) are the managed basis for the environmental water quality control aim.
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。
According to the guidelines, numerical water quality criteria were derived on the basis of screening and analysis of toxicity test data of individual animal and plant species.
介绍了以保护自然生态系统中水生生物为主要目标的美国水质基准技术指南。
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.
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。
To resolve the computational complexity in water quality fraction matrix for complicated water distribution systems, a recursion method was used to obtain the coverage matrix under coverage criteria.
针对复杂管网水质比例矩阵求解困难的问题，利用递归方法求解水质比例矩阵，由此得到给定覆盖标准下的覆盖矩阵。
When water quality and target are certain, the value may become a basis for criteria of system suporiority.
在水质及目标确定条件下，该值也许可成为判断系统优劣的依据。
When water quality and target are certain, the value may become a basis for criteria of system suporiority.
在水质及目标确定条件下，该值也许可成为判断系统优劣的依据。
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