水的物理、化学和生物特征的测定。通常包括四个不同种类的检验：细菌检验、化学检验、显微镜检验和物理检验。
是否能证明化学药水分析有定期完成？
Is there an evidence that chemical analysis is performed periodically?
在水分析中区别表现色度和真实色度是重要的。
In water analysis it is important to differentiate between apparent and true color .
以上图片数据来自美国宇航局戈达德太空飞行中心【1】的卫星降水分析系统。
This image is based on data from the Multisatellite Precipitation Analysis (MPA) produced at NASA's Goddard Space Flight Center.
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