地下水硬度,hardness of groundwater
1)hardness of groundwater地下水硬度
英文短句/例句
1.Grey prediction of data sequence of the hardness in shallow groundwater in Luoyang洛阳市浅层地下水硬度的灰色数列预测
2.Analysis on the Change of Groundwater Salinity and Hardness in Hutuohe Plain滹沱河平原地下水矿化度和硬度变化分析
3.The Characteristics of Groundwater Chemical and Numerical Simulation of Total Hardness in the Suburb of Beijing北京市郊区地下水化学特征及总硬度数值模拟
4.Distribution and evolution trend of total hardness of shallow groundwater in plain area of Henan Province河南省平原地区浅层地下水总硬度的分布及演化趋势
5.Research on the Minimum Rock Cover Thickness of Underwater Tunnel in Alternating Layers of Hard and Soft Rocks;软硬岩交互地层水下隧道最小岩石覆盖层厚度研究
6.Hydration, Hardening and Compressive Strength of Class G Oil Well Cemnet under High Temperature;高温下G级油井水泥的水化硬化与强度
7.evaluation of groundwater pollutio地下水污染程度评价
8.The Biomechanical Contributions of the Lower Extremity Joints from Different Height to the Different Landing;从不同高度下落到不同硬度的地面上下肢关节的力学响应
9.THE BIOMECHANICAL CONTRIBUTIONS OF THE LOWER EXTREMITY JOINTS FROM 60 cm HEIGHT TO THE DIFFERENT LANDING;从60cm高度下落到不同硬度的地面下肢关节的力学响应
10.Total Hardness and Trace Element Content of Drinking Water Produced by the Waterworks if Towns in South Jiangsu Ares苏锡常地区建制镇水厂出厂水中总硬度及微量元素调查
11.This process removes the water hardness.这一工艺去除水的硬度。
12.A Application Study of Surface Water & Groundwater United Optimization and Desposition on Xinjiang Yanqi Basin;新疆焉耆盆地地表水、地下水联合调度应用研究
13.Groundwater Quality Evaluation Based on Ionic Strength and Ionic Activity基于离子强度与活度的地下水质评价
14.Surface subsidence (ground depression) caused by the overuse of ground water过度抽取地下水引起的地面沉降
15.Keeping flexibility and softness in dry state without becoming dry and hard; no wetting process is needed.在干燥状态下能保持弹性及柔软度，且不干硬，无需加水保湿。
16.drawdown [groundwater]水位下降〔地下水〕
17.Correlation Study on Total Hardness of Drinking Water with Some Anions in Beijing Area北京地区饮水中总硬度与几种阴离子相关关系的研究
18.The land itself freezes (up) in such low temperatures.温度这麽低, 地都冻硬了.
相关短句/例句
high-hardness and fluoride groundwater高硬度含氟地下水
1.Lime softening process was used to treathigh-hardness and fluoride groundwater,and the effect of chemical dosages and reaction time on treatment efficiency was investigated.采用石灰软化法处理高硬度含氟地下水,考察了药剂投量、反应时间对处理效果的影响。
3)Depth of groundwater地下水深度
4)groundwater temperature地下水温度
1.The perennial change characteristics ofgroundwater temperature in phreatic aquifer, confined aquifer and Cretaceous porous-fractured aquifer in the plain area of Central Jilin is analyzed systemically.以吉林中部平原区为例,分析了孔隙潜水、孔隙承压水以及白垩系孔隙裂隙承压水温度的多年变化特征,并采用灰色关联度分析方法,确定了各含水层地下水温度与地下水埋深、气温、降水量之间的关联性,分析了影响其变化的主要因素。
2.The experimental method was employed to study optimization quantity matching intake well with injection well,injection situation during the heating period andgroundwater temperature change effect on performance of heat pump.采用实验的方法,研究了深井水源热泵系统抽水井和回灌井个数优化配置和回灌井回灌情况以及地下水温度变化对热泵机组性能的影响等问题。
3.The perennial characteristics ofgroundwater temperature in phreatic aquifer,porous confined aquifer and cretaceous porous-fractured confined aquifer in plain area in central Jilin are analyzed from 123 wells.采用灰色关联度分析法分析了影响地下水温度变化的主要因素,计算了各含水层地下水温度与地下水埋深、气温、降水量之间的关联度。
5)underflow speed地下水临度
6)decline of groundwater level地下水下降幅度
1.And the major role causing thedecline of groundwater level was calculated on the basis of the above simulations.同时,由反映农作物灌溉耗水量与地下水埋深变化之间关系的公式得知:灌溉粮食作物引起的地下水下降幅度最大,占总下降幅度的70。
延伸阅读
水硬度分子式：CAS号：性质：水中的钙、镁等离子，阻止肥皂在水中形成泡沫的能力。是水的一项质量指标，反映水的含盐特性。表示水中所含可溶性钙盐、镁盐、铁盐等的总量。工业上，水的硬度有几种表示方法。一般1度相当于100万份水中含有l份碳酸钙(即1ppm)。德国硬度比较常用，1度相当于10万份水中含有l份氧化钙。
