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。
应用推荐