查询词典 soil

The aim was to study the effects of different chelators on soil enzyme and soil respiration in heavy metal contamination soil.

［目的］研究不同螯合剂对重金属污染土壤酶和呼吸强度的影响。

The chelators were added to the soil of potted rape. pH value, soil urease, catalase activity and soil respiration intensity were determined.

方法］在盆栽油菜的土壤中添加螯合剂，测定土壤pH值、土壤脲酶、过氧化氢酶活性以及土壤呼吸强度。

The artificial oil contaminated soil was confected by using the crude oil of Huabei Oilfield and the typical soil on North China Plain, with analysis of organic component and viscosity of crude oil, and the size distribution of the soil.

以华北油田原油和华北平原典型表层土壤为模拟原料，配制了石油污染土壤。

Because the major load bearing on retaining wall is soil pressure, the Coulombs theory of soil pressure, which is often used in engineering, is adopted to calculate the magnitude and the action point of soil pressure.

由于挡土墙所承受的主要荷载是土压力，因此采用工程中普遍使用的库仑土压力理论来计算土压力的大小和作用点。

The results show that soil-root complex still comply with Coulombs law; root-soil complex cohesion and the incremen in the unit soil content directly proportional relationship, and the root system anchoring role formula is established based on this; Different distribution methods in root has different impact on the shear strength of composite material.

结果表明，根土复合体仍然符合库伦定律；根土复合体粘聚力的增量与单位土体中根系的含量成正比关系，在此基础上建立了根系锚固作用公式；根系不同的分布方式对根土复合体的抗剪强度有不同影响。

The results showed that pH in the 0 ~ 10 cm soil depth was decreased by 0.27, 0.44 and 0.08, 0.18, and soil exchangeable Al was increased by 4.43% and 2.38%, respectively, after leached with pH 3.5 and pH 4.5 simulated acid rain, compared with deionised water check, while pH in the10 ~ 50 cm soil depth was not changed sig...

结果表明，与去离子水CK相比，pH3.5和pH4.5模拟酸雨淋洗后0~10cm土层pH分别降低了0.27、0.44和0.08、0.18个单位，土壤交换性Al含量分别增加了4.43%和2.38%；而10~50cm土层pH没有显著变化。

Aiming at this question, the paper put forward utilizing layer of soil to depurating rainwater project. The paper researches the rule of soil depurating rainwater and ascertain measure of cortroling contamination, on the basis of which the paper put forward rainwater depurated by soil to manual recharging groundwater project.

针对这一问题，本文提出就地利用土壤层收集净化雨水的方案，研究了雨水在土壤层中的净化规律，确定需要采取的污染控制措施，并在此基础上以西安市某规划小区为例，提出雨水通过土壤层净化后人工补给地下水的实施方案。

In practical project, especially in the condition of soil with badly penetrating ability and lower groundwater level ,can adopt about one meter deepness manual soil laying on the greenbelt and can also design special manual soil depurating equipment around building to dealing with rainwater, which not only assures depurating effect but also saves occupying area and improves environment.

本论文的研究结果表明，经合理设计控制，利用人工加人细砂的土层处理雨水径流，可达到较好的处理效果，实际工程中，尤其是在土壤渗透性很差，地下水位较高等情况下，可以在绿地表层采用lm左右的人工土壤层，'也可在建筑物附近设计专门的人工土壤净化装置来处理雨水径流，既可保证处理效果，又可节省占地和改善环境。

Results of the studies have comfirmed that surfactants cause the NAPLs to desorb from soil strongly and enhances the transferability of NAPLs through soil by improving their dissolution in liquid and fluid ability in soil. So the efficiency of pump-treat method can be improved by the surfactants.

大量研究表明，表面活性剂能促进NAPLs从土壤颗粒中解吸，并通过增溶和增流作用改善NAPLs在土壤中的溶解和迁移能力，进而提高抽出处理法的去除效率。

And at the P concentration of 400 mg P/L and 800 mg P/L, the amount desorbed of garden soil is significantly higher than that of soil in farmland and orchard soil.

加磷梯度在200mgP/L以内时，三种土壤对磷的解析量差别不大，随着平衡溶液浓度的增大，在400、800mgP/L下，菜园土解析的磷量要明显大于农田土和果园土。

Shop assistant: Please check at the door.

店员：请您到门口柜台交费。

In the end, transportation of PAHs in the environmental matrix was preliminarily investigated and discussed according to PAHs data of soils and sediments from a certain region in Shanghai. The result indicated that there are two or more pathways on PAHs transportation in the environmental matrix.

最后，对上海特定地区内PAHs在环境介质中的迁移径途进行了分析讨论，结果表明上海市土壤和沉积物等环境介质中PAHs的迁移存在多种途径。