Afterward, a pricing model allowing for water quality difference is founded by applying the utility function, which contains quality preference parameters.
然后通过引入包含质量偏好参数的效用函数，进而建立了考虑水质差异的再生水自主定价模型。
A bowl of water with a few drops of oil near a heat source can make a difference in air quality.
在一碗清水里滴进几滴精油，靠近发热源就可以营造出一种完全不同的空气质量。
The results showed that there are difference in main quality characters of wheat grain under different varieties and different water conditions.
研究结果表明：小麦籽粒主要品质性状在不同筋型间差异达到极显著水平，在不同水分条件下也存在显著差异。
The underground hot-water of difference type is characterized by difference water quality.
区内不同类型的地下热水其水质各具特点。
The fruit growth rate and quality fo ya pear have close relations with weather conditions such as temperature, water and temperature difference between day and night etc.
鸭梨果实生长速度和品质形成与热量条件、水分条件、温度日较差等气象条件关系密切。
In water level, analog observation and digital observation are difference in nature. Two kinds of data are consistent in trend and natural quality but different in stability and accuracy.
而水位的数字化与模拟观测，因其观测的原理存在差异，虽然二者的趋势变化一致、内在质量相当，但其精度和稳定性却存在较大差异。
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。
The paper mainly compares the water quality and the controlling measure of the typical lakes in Europe, Asia and North America, and analyses the difference with that of China.
本文主要对欧亚美三洲典型湖泊的水质及治理措施进行了简单对比，并分析了与我国湖泊之间的差异。
The paper mainly compares the water quality and the controlling measure of the typical lakes in Europe, Asia and North America, and analyses the difference with that of China.
本文主要对欧亚美三洲典型湖泊的水质及治理措施进行了简单对比，并分析了与我国湖泊之间的差异。
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