Objective: To measure the background fluoride and related water quality indices in water source of Nan 'ao County.
目的：测定南澳县水源水中氟化物的背景值及其它相关水质指标。
According to the resource and characteristics of urban recycling water, water quality control indices should include basic control indices and selective control indices.
根据再生水的来源及性质，将灌溉绿地水质控制项目分为基本控制项目和选择控制项目两类。
A method was established to evaluate the quality system of gel yoghurt by using subjective index and objective indices: gel strength, susceptibility to syneresis and water holding capacity.
并确定了凝胶型酸乳的三项客观评价指标即凝胶强度、脱水收缩作用敏感性和持水力，从而初步建立起了一套可评价凝胶型酸乳质量的方法。
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