size grade of soil是什么意思

网络释义

用法例句

Determination of As,Sb,Bi,Cd and Sn in Soils and Sediments by Inductively Coupled Plasma Atomic Emission Spectrometry after Sublimation Separation as Iodides;

碘化物升华分离-电感耦合等离子体光谱法测定土壤和沉积物中砷、锑、铋、镉、锡

The Research Status of Bio-remediation of Heavy Metals Contaminated Soils;

重金属污染土壤生物修复技术研究现状

Environmental Response and Behavior of Heavy Metal in Soil;

重金属在土壤载体中的行为和环境响应

Effect of digestion on measurement of total mercury in topsoil;

不同消解方法对土壤样品中汞含量测定的影响

To effectively control heavy metal pollution of city roadways induced by motors, the pollution index method was adopted to analyze and evaluate the characteristics of heavy metal pollution of roadway dust and topsoil near by roadside trees, and grasp the status of heavy metal pollution of city roadways.

为了减轻汽车行驶导致的城市道路重金属污染,采用污染指数法分析、评价东京城市道路粉尘、行道树表层土壤的重金属污染特征,掌握道路受重金属污染的状况,探讨行道树树叶对重金属的捕获能力及树种间的差异。

The ratio of the content of an element in topsoils (depth 10-20 cm) to its content in deep soils (depth 150-200 cm) is called artificial environmental concentration coefficient in soils.

南京周边地区开展多目标地球化学调查获取了“双层土壤”各元素的含量,表层土壤的元素含量与其深层土壤元素含量之比值即称之为土壤中该元素的人为活动环境富集系数(简称环境富集系数),笔者介绍了有关环境富集系数的计算方法。

Analyzing Cadmium's Influence Of Soil Environment;

浅析土壤环境中的镉的影响

Effect of DOMs extracted from five solid organic wastes on cadmium adsorption in soils;

废弃物中水溶性有机质对土壤吸附Cd的影响及其机制

Effects of liming on the transformation and distribution of cadmium formations in soils were studied.

研究了土壤施加石灰后对镉的形态转化和迁移的影响。

Heavy Metal Contents and Pollution Evaluation of Soils in Chinese Medicinal Herbs GAP Bases in Guizhou Province;

贵州省地道药材GAP基地土壤重金属含量及污染评价

Residual and Potential Risk of Organochlorine Pesticides in Urban Soils of Yinchuan City;

银川城市土壤中有机氯农药残留及其潜在风险

Reduction of 2-chloronitrobenzene by Fe~0 in soils;

零价铁对土壤中2-氯硝基苯的还原作用

On the basis of the studies conducted in China and the world, the paper summarizes effects of irrigation, precipitation, fertilization, soil property, vegetation and cultivation on nitrate nitrogen leaching.

本文对影响硝态氮淋洗的灌溉与降水、施肥、土壤性质、植被、耕作等因素的研究结果分别进行了分析和总结 ,指出硝态氮的淋洗是这些因素共同作用的结果 ,提出了防止和减少硝态氮淋失的主要措施。

Then this paper summarized the recent development in the land use models based on the three ways:regional character,landscape ecology,soil property.

首先简要介绍国内外土地利用研究的概况 ;然后着重阐述基于地域特点、景观生态学、土壤性质三个方面的土地利用模式的研究进展 ,旨在综合已有研究经验和成果 ,促进今后相关研究的发展 ;最后提出有待进一步研究的问题 。

Tentativea analysis trace selenium in radix puerariae and its soil property by microwave digesion-single sweep polarograph;

采用微波消解单扫描极谱法测定了葛根及其种植土壤中微量硒的含量,并做了初步分析,为葛根产品的研发提供重要依据,也为进一步开发葛根优良品种和平衡施肥提供科学信息和依据。