Existing methodology for deriving aquatic environment including water quality standard, sediment quality standard for protecting aquatic environment of the USA and European Countries were reviewed.
综述了美国及欧洲一些国家现行推导水生环境质量标准的方法研究。
Water stability is an important quality index of aquatic feed, which exerts direct influence onthe effect and environment of aquatic breeding.
水产饲料耐水性是衡量水产饲料质量的重要指标，直接关系到养殖效果和环境。
The influence of fire on water is indirectly manifested in that the post fire changes of vegetation, ground cover, soil and environment affect water cycle, water quality and aquatic lives.
火对水分的影响间接地表现在火后植被，地被物、土壤和环境的变化会影响水分循环、水质和水生生物。
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