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

    采用EDTA滴定法测定水质硬度测量不确定评定

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  • Making use of the cause and effect diagram to analyse the sources and influences of uncertainty in determination of total hardness in water by EDTA titrimetric method was introduced.

    采用直观因果EDTA滴定测定水中硬度的不确定来源及其测量不确定度的影响进行分析。

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  • In the process of water softening, hardness is reduced, and total content.

    软化过程,仅硬度降低含量不变。

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  • Because the changing of source water, obvious variety of total degree hardness index about the new source water caused the difference on residents' taste.

    结果显示供水水源更换供水系统总硬度指标显著变化导致口感差异

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  • Adoption of this crosslinking mode could markedly improve water resistance, solvent resistance, glossiness and hardness of the film. 6.5w % DAAM out of total monomer mass was preferred.

    采用交联体系,显著提高涂膜水性、耐溶剂性、光泽度硬度DAAM的用量以占总单体质量的6.5%为好。

    youdao

  • Adoption of this crosslinking mode could markedly improve water resistance, solvent resistance, glossiness and hardness of the film. 6.5w % DAAM out of total monomer mass was preferred.

    采用交联体系,显著提高涂膜水性、耐溶剂性、光泽度硬度DAAM的用量以占总单体质量的6.5%为好。

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