总硬度：指一类混合物体中各种物体硬度的总和。 一般指水体总硬度。
电导率、矿化度和总硬度密切相关。
The electrical conductivity is relationship with the mineralization and hardness in water.
采用EDTA滴定法测定水质总硬度的测量不确定度评定。
Uncertain degree is evaluated to adopt EDTA titrimetric law to measure total hardness of water quality.
总硬度和总固体与硝酸盐氮呈显著正相关，与氨氮未表现出相关关系。
Total hardness and total solids appear positive correlation with nitrate, but no correlation with ammonium.
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