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.
本文试用灰色关联分析方法，找出影响总硬度的主要因素，分析成因机理。
This article attempts to use grey correlation analysis method to identify the main factors affecting total hardness, and to analyze its genetic mechanisms.
主要无机成分：钠，钾，氯，钙，镁，碱度，总硬度，总磷，氟化物，硫酸盐。
Major Inorganic Components: Sodium, potassium, chloride, calcium, magnesium, alkalinity, total hardness, total phosphorus, fluoride, sulphate.
结果显示因供水水源的更换，新供水系统总硬度指标显著变化，导致口感差异；
Because the changing of source water, obvious variety of total degree hardness index about the new source water caused the difference on residents' taste.
结果表明：该地区以地下水为水源的水厂水中总硬度、铁、锰的含量较高，超标严重。
The report indicates that the samples from waterworks using underground water as the source have much higher Ca, Mg, Fe and Mn content than the standards permitted.
其中，混合水、地下水、地面水总硬度、硫酸盐、氯化物、耗氧量四项指标有显著差异（P<0.01）。
The total hardness, sulfate, chloride and consumption oxygen quantity in mixing water , underground water and surface water existed significant difference(P<0.01).
采用直观的因果图，对EDTA滴定法测定水中总硬度的不确定度的来源及其对测量不确定度的影响进行分析。
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.
与枯水期比较，丰水期自备井水样中总硬度、硫酸盐、氯化物含量均较高，差异均有统计学意义（P<0.05或P<0.01）。
Total hardness, the concentrations of sulfate and chloride in homemade wells at wet season were significantly higher than those at dry season(P<0.05, P<0.01).
文中对采用方波脉冲电流的电子水处理器的阻垢效果进行了研究。结果表明，当采用平均电压为2V的方波脉冲电流时，对水样阻垢率达到100%，且能一定程度地降低水样的总碱度和总硬度。
In this paper, the anti-scaling effect of EWP which used square-wave pulse current have been studied, the data show that the anti-scaling rate is 100% when the voltage is 2v.
水在软化过程中，仅硬度降低，而总含量不变。
In the process of water softening, hardness is reduced, and total content.
适当叶面喷氮可以增加球蛋白、谷蛋白和总蛋白含量，并可提高籽粒硬度和湿面筋含量，增加面包体积和面包评分。
Foliage spraying properly nitrogen could increase the globulin, glutenin and total protein content, and increase grain hardness, wet gluten, loaf volume and loaf score.
而且饮用水的硬度和总溶解性固体（TDS）和当地居民心脏病的死亡率有确定的正相关性。
It has been found from some investigations that TDS and hardness of drinking water correlate with the lethal rate of heart disease of the local population.
采用该交联体系，可显著提高涂膜的耐水性、耐溶剂性、光泽度及硬度，DAAM的用量以占总单体质量的6.5%为好。
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.
结果表明：浸钙处理的果实总钙含量显著提高，其硬度明显高于对照，且有利于细胞膜透性的保持；
The results showed that calcium solution treatment significantly increased total calcium content in fruits, improved fruit firmness and maintained permeability of cell membrane significantly.
按照最佳处方制备的扁蓄总黄酮片硬度和外观大为改善，崩解度大为提高。
Total Flavone of Polygonum Aviculare Tablets prepared with this optimum prescription was much better in terms of hardness and surfaces and the disintegration was also better.
按照最佳处方制备的扁蓄总黄酮片硬度和外观大为改善，崩解度大为提高。
Total Flavone of Polygonum Aviculare Tablets prepared with this optimum prescription was much better in terms of hardness and surfaces and the disintegration was also better.
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