This study is part of efforts by the U.S. Geological Survey's National Water-Quality Assessment Program to monitor the quality of the nation's groundwater and surface water.
这项科学研究是美国地质调查局国家水质评估项目的一部分，旨在对美国地下和地表水质进行检测。
This paper introduces quality assessment standards for steel deck, concrete deck and road surface of Haicang Bridge in Xiamen.
介绍了厦门海沧大桥钢桥面及混凝土桥面、路面的质量评定标准。
The grey system assessment method, air pollution integrated index are applied to evaluate the atmosphere, surface water, noise environmental quality of valley cities in western China.
本文首先采用灰色系统评价方法、空气污染综合指数等方法对中国西部河谷型城市大气、地表水、噪声环境质量进行了客观评价。
It is lack of quantitative assessment of control effectiveness, especially the research on surface segregation as indicators of quality assessment is still very lacking.
对离析控制效果的定量评价，特别是表面离析作为沥青路面施工质量评价指标的研究还非常欠缺。
Aimed at actual question of water quality assessment, the BP neural network model is established which synthetically assesses the surface water quality of the Wei river.
针对实际水质评价问题，建立了渭河地面水环境质量综合评价的BP神经网络模型，并与单因子法、主成分分析法进行了分析比较。
Aimed at actual question of water quality assessment, the BP neural network model is established which synthetically assesses the surface water quality of the Wei river.
针对实际水质评价问题，建立了渭河地面水环境质量综合评价的BP神经网络模型，并与单因子法、主成分分析法进行了分析比较。
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