水的硬度

ICP-AES法快速测定酿造水的硬度

Rapid Determination of Hardness of Water with ICP-AES

NaF的用量应以水的硬度而定。

The amount of NaF depended on the hardness of water .

人们还要求水的硬度及固体含量都低，无腐蚀性，不生成水垢。

The public desires water which is low in hardness and total solids , noncorrosive , and non-scale-forming .

阴离子浓度和水的硬度对LAS泡沫的影响

Effect of Anion Concentration and Water Hardness on the Foaming of LAS

半致死浓度Lc50与pH和水的硬度成反比。

The lethal concentration is inversely proportional to pH and water hardness .

研究以火焰原子吸收法测定水的硬度，并与EDTA滴定法进行比较。

Comparing with the method of EDTA-titration , the method to determine hardness of water by flame-atomic-absorption was introduced in this paper .

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 .

结果表明，加入碱处理剂（Na2CO3）能有效降低深井水的硬度，合适的温度和较高的压差有利于提高通量，用超声波对污染后的陶瓷微滤膜清洗效果显著。

The results show that alkaline agent ( Na2CO3 ) is effective to decrease the degree of hardness of deep well water . Appropriate temperature and higher pressure difference are benefit to increase the flux . It is effective to clean membrane fouling by ultrasonic .

水的硬度对蹄筋涨发率的影响

The effect of hardness of water to the expansion of tendons

水的硬度对切削液性能的影响

The Effects of Water Hardness on the Performance of Cutting Fluids

目的用配位滴定法测定不同来源水的硬度。

ObjectiveThe different source of the water hardness were measured by the coordination titration .

黔北高原喀斯特水的硬度特征

Hardness of karst water on North Guizhou Plateau

降低水的硬度、使之更容易起泡沫的物质。

A substance that lessens the hardness of water giving it more efficient sudsing .

曝气-石灰碱化法除铁除锰、降低水的硬度和溶解性总固体含量的研究

Fe-Mn Removal and Hardness TSS Reducing in Water

这一工艺去除水的硬度。

This process removes the water hardness .

离子色谱法测定水的硬度

Ion chromatographic Determination of Hardness of Water

火焰原子吸收法测定水的硬度

Determining Hardness of Water by Flame-atomic-absorption

水的硬度与健康

The hardness of water and health

研究了水的硬度变化同陶瓷泥浆性能（如：粘度、厚化度、触变性）的关系。

This paper studies the relationship of water hardness and ceramic slip ( such as viscosity , etc. )

水的硬度是由其含石灰盐和氧化镁的数量决定的。

The hardness of water depends upon the amount of salts of lime and magnesia which it contains .

为了弄清瀑布效应和这些物理性质变化是否会减少水的硬度，本研究设计并进行了一系列的试验。

A series of experiments was designed and implemented in order to investigate whether these effects and associated physical changes may cause a reduction of water hardness .

本文对稀释水的硬度、温度对纳米助留剂的影响进行研究，其研究结果表明稀释水质量对纳米助留剂性能的影响是相当大的。

The results of the research on the relation between the hardness and the temperature of dilution water and the performance of nano-retention aid show that the effects are obvious .

引起沉淀的原因有水的硬度、水中腐殖质、酒基、贮酒容器、输送管道及过滤设备、使用香精、香料等问题。

The reasons of liquor turbidity include water hardness , humic substances in water , base liquor , liquor containers , transfer piping , filtration equipment , and the use of perfume etc.

在美国和其它发达国家，许多慢性病的发病率尤其是心血管疾病与水的硬度呈逆相关。

The rate of many chronic diseases , especially the diseases harming the heart and blood vessel is inverse to the hardness of water in U S A and other developed countries .

结合生产实际，分析了水的硬度对泥浆性能及产品质量的影响，进一步寻找硬度值同泥浆粘度值的数量关系，以达到根据水的硬度值调整各种工艺参数或根据工艺参数处理水质的目的。

And analyses the effect of water hardness on the property of slip and product quality in a bid to seek the proper quantitative relationship of the hardness value and the viscosity value .

依据天然水的硬度分类表，区内主要流域及支沟水多为软水，冷泉水、温泉、井水多为中等硬度的水。

According to natural water hardness classification , the region most major and tributary basin of water , are mostly soft water , cold springs , hot springs , wells and more for the medium hard water .

当您降低水的硬度后，可以减少高达50%的肥皂使用，矿物不会积聚在热水器种，也可以更有效的清洗衣服。

When you remove the hardness , you can reduce your use of soap by up to50 % , the minerals do not accumulate in the hot water heater , and clothes can be cleaned more effectively .

天然水的总硬度的测定

Estimating Total Hardness in Natural Water

设计了三组混凝土钙溶蚀实验，验证了无论是降低外界环境水的暂时硬度，还是提高混凝土空隙液中石灰的溶解度来说都将加剧钙的溶蚀。

Three calcium leaching experiments were designed to approve that both reducing temporary degree of hardness of environmental water and enhancing calcareousness concentration in void-water speeded up the process of calcium leaching .

在高温老化的初期，密封剂由于体系中的小分子氢和水等的存在，硬度下降，当老化时间超过100h后，密封剂的硬度保持不变；

At the beginning of high temperature ageing the sealant hardness drops because of the existence of small molecules and water in the system , but after 100 hours of ageing the sealant hardness remains stable ;