earth acids是什么意思

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用法例句

Influence of different cultivating fertility measure on humus of several kind of soil types in Guizhou east;

通过5年的定位试验,结果表明,长期有机无机肥配施或粮肥轮作、间种配施化肥均能提高黄壤土类黄泥土、红壤土类黄红泥土和潮土类潮泥土的有机质、腐殖质和活性腐殖质含量,其中胡敏酸、富里酸也相应增加,但以粮肥轮作、间种配施化肥的培肥效果最好。

The buffering characters of loessial soil to applied As of which is different concentrations,and their dynamic variety regulations with equilibrium time and pollutant concentrations was studies.

研究了黄土类土对不同浓度外源As的缓冲性及其随平衡时间、污染物浓度的动态变化规律;阐明了黄土类土对As的缓冲速率与平衡时间的关系;确定了黄土类土对As的缓冲动力学方程,为更准确的评价黄土类土对As的污染-净化能力提供依据。

At the basis of comprehensive studies about mechanism and model of environment capacity in soil,the soil column leaching experiments are conducted to different layers of loessial soil including cultivated horizon,plow pan,argillic horizon and calcic horizon.

本文在阐述利用土柱淋滤试验研究土壤环境容量的机理和模型的基础上,对黄土类土的耕层、犁底层、粘化层和钙积层进行土柱淋滤试验,对试验结果进行拟合,通过建立方程求解,从而确定土壤环境容量。

With increasing of human being's activities on farming and watering, it has great theoretical and practical significance on how to utilizing purification function of loessial soil to protect groundwater from polluting, which is the basis of building item of this paper.

(2)分析了由于农事和水事活动所发生的土层入渗水中的污染元素，确定了毒性强、数量大、易迁移的铬、砷作为主要研究对象，研究其在黄土类土中的行为作用有代表性意义。

Experimental Study on Salt Expansion of Gravel Sulfate Salty Soil Based on Uniform Design

基于均匀设计的砾类硫酸盐渍土盐胀特性试验研究

The Application of Cement Mixing Pile for Improvement in Sulfate Salinization Soft Soil

水泥搅拌桩在硫酸类盐渍化软土地基处理中的应用

Study on the Salty and Frost Swelling of Sulfate (Sulfurous) Salty Soil Fills in Shuimohe Plain, North of Tianshan;

新疆水磨河细土平原区硫酸（亚硫酸）盐渍土填土盐胀和冻胀研究

Forecast model of salt-frost heaving deformation of sulfate (sulfurous) salty soil and its contrast study with in-situ observation

硫酸(亚硫酸)盐渍土盐-冻胀变形预报模型及与原位观测对比研究

Swelling Mechanism and Restraining Measures of Sulphate Salty Soil under Freeze-thawing Condition

冻融条件下硫酸盐渍土的膨胀机理及抑制措施

The study for Sulfate(sulfite) saline soil in different soil dry density and the law between Salt and sodium content and frost heave force

硫酸(亚硫酸)盐渍土不同土干密度和硫酸钠含量盐-冻胀力规律试验研究

The Study and Numerical Simulation on Moisture-heat-salt-stress Coupled Mechanism in the Sulphate Saline Soil Subgrade;

硫酸盐渍土地区路基水、热、盐、力四场耦合机理及数值模拟研究

The factors causing soil salinization include natural factors such as climate, hydrological and geological conditions, and human-made factors, such as irrigation patterns and cultivating system.

盐渍化土壤类型主要为典型盐土、沼泽盐土、碱化盐土和干旱盐土。

The salt expansion laws of crude saline soil were researched by use of three kinds of soil.

从土的类别角度研究了天然盐渍土的盐胀规律。

Optimal Application Rate of Desulfurized Gypsum in Ameliorating Soils Moderate in Sodic Salinity

脱硫石膏改良中度苏打盐渍土施用量的研究

Studies on the Impact of Salt Content on Saline-alkali Soil Engineering Properties in the Songnen Plain;

含盐量对松嫩平原碳酸盐渍土工程性质的影响

Acids used in pickling can include sulfuric.

酸浸渍中用的酸有硫酸。

bisulfate, bisulphate

硫酸氢盐,酸式硫酸盐

sulphate-ethoxylated alcohols

乙氧基化醇类的硫酸盐；乙氧基化醇类的硫酸酯

Studies on the Deformation and Strength Property of Songnen Plain Carbonate Saline Soil

松嫩平原碳酸盐渍土的变形和强度特性研究

hydrogen sulfate

重硫酸盐，硫酸氢盐

Effect of CM-type corrosion-resistant sulfate preservatives on the durability of reinforced concrete

CM型抗硫酸盐类侵蚀防腐剂对钢筋混凝土耐久性的作用

Study on Saline Soil Water and Salinity Transportation of Different Salt Recharge Types in Songnen Plain;

松嫩平原不同盐分补给类型盐渍土的水盐运移规律研究