total hardness

For measuring the basicity , calcium stiffness and total hardness, a new successively titrating way is recommended.

为工业循环冷却水中碱度 、 钙硬和总硬度的测定推荐了一种连续滴定的新方法.

The research on the karst collapse distribution and the hydrogeochemical environmental characteristics of Guilin city shows that SIc value is closely related to the collapse distribution, secondly pco2, but the total dissolved solid, the hardness and SID value are weekly related to it.

对桂林市岩溶塌陷分布及其水文地球化学环境特征研究表明，塌陷分布与SIc值的关系较密切，与Pco2次之，而与矿化度、硬度、SID值的关系不明显。

The results showed that: Chitosan can maintain blueberry fruit sensory quality, hardness, reduced weight loss and decay rate, significantly inhibited the accumulation of MDA fruit, slightly reduced anthocyanin content, total phenolic content and promote the increase of relative conductivity.

结果表明：壳聚糖处理能维持蓝莓果实感官品质、硬度，降低失重率和腐烂率，显著抑制果实丙二醛（MDA）的积累，花色苷含量略减，促进总酚含量和相对电导率上升。

The relationship between phytoplankton biomass and the pH, total alkalinity, total hardness and salinity was all described as parabola.

浮游植物生物量与pH、总碱度、总硬度、含盐量呈抛物线关系。

Uncertain degree is evaluated to adopt EDTA titrimetric law to measure total hardness of water quality.

采用EDTA滴定法测定水质总硬度的测量不确定度评定.