土柱

Air permeability of field soil was obtained k1=4.8446×10^(-12)m^2 by soil column method. Meanwhile, relative permeability curve of air-water was gained by biphase flowing experiment. During experiment period, average of soil water content was 0.2689g and pH value was 7.0-8.5. The quantity of aboriginal animalcule went down sharply after pouring contamination into the ground and then rose gradually to its original level which was 10^7 (unit g1dry soil).

采用土柱法测得现场土壤的空气有效渗透率为k1=4.8446×10^(-12)平方公尺，通过气液两相流动试验得到气－液相对渗透率曲线；试验期间土壤平均含水量为0.2689g，pH值在7.0-8.5之间；微生物含量在注入污染物及营养盐后先下降后回升，驯化后期细菌密度达10^7（个g^(-1)干土）数量级。

Green-Ampt model can be applied in analyzing capillary water rise process of homogeneous soil. A laboratory experiment was conducted for capillary soil transport characteristics of homogeneous soil.

将Green-Ampt模型用于均质土壤毛管水上升过程分析中，通过室内土柱模拟试验，对均质土毛管水运动特性进行了研究。

Between those two slits there are 10 columniations which could indicate that the visual Sun moving from the one columniation to another is a solar term.

模拟观测结果表明，位于东南和东北的二狭缝可准确测定冬至和夏至日期，而此二狭缝之间有10个土柱，应象征着视太阳向北和向南每位移一个土柱为一个节气。

In the column tests,when the composite nano-scale Fe3O4 suspension was introduced in the downflow mode through the soil column,72% of Fe3O4 penetrated through the soil bed under gravity.

在土柱实验中，将2种Fe3O4悬浊液注入到10cm高的土壤柱中，72%的复合纳米Fe3O4穿过土壤柱溢出，而微米Fe3O4完全滞留在土壤柱中没有溢出。

Meanwhile, Leach test of earth pillar has also been carried out with 1.2m in the tube-shaped container's length, 30cm in the earth pillar's diameter and 1m in its height.

还实施了土柱淋滤实验，土柱长度1.2m ，直径30cm ，装填高度1m ，土柱为五层，按层测定实验前后土壤中的含油量。

Acquire settlement difference ±δ key parameter between inner fill column and outer fill column from practical measure, also confirm that ±δ is a compositive parameter that can reflect all influence factors of vertical soil pressure surely.

从实测中获得内外土柱沉降差±δ这一关键参数，并证实±δ的确是一个能反映垂直土压力各种影响因素的综合性参数。2。

The leaching and vertical moving of 125 I in subtropics soils of south China were studied by soil volume.

采用玻璃土柱法研究了125I在华南地区砖红壤和水稻土中的淋溶和垂直迁移。

Three protozoa (Bodo edax, Colpoda cucullus, Amoeba proteus) were isolated from soil. The porous simulation with glass bead, soil column and root box incubation experiments were made to study the association of protozoa movement with phosphorus translocation and its influencing factors. The effects of protozoa on corn growth and corn straw mineralization were also involved. The results showed that protozoa movement in glass bead column was greatly controlled by the pore sizes. Bodo edax, about 5-7 m, could pass through the pores of 28-20 11 m in diameters. Colpoda cucullus (30-60 m) could move through the pores of 155~116 m. However, no Amoebaproteus(100~150 m) was found in the effluents from all the columns. All the three protozoa made 32P redistribution in soil column.

本研究利用土壤中常见的3种原生动物(梨波豆虫Bodo edax、僧帽肾形虫Colpoda cucullus、大变形虫Amoeba proteus)，通过玻璃珠孔隙模拟、土柱及根箱培养试验，研究3种原生动物运动与磷素运移之间的关系及其影响因素，以及原生动物对玉米磷素营养的影响，同时对3种原生动物在玉米秸秆分解中的作用做了初步的探索，研究结果表明：原生动物的运动与孔隙密切相关，Bodo edax(5～7μm)能够穿过28～20μm孔隙，Colpoda cucullus (30～60μm)只能穿过155～116μm的孔隙，而Amoeba proteus(100～150μm)不能从玻璃柱中流出。

The expression of one-dimensional mathematical model of vertical migration of ammonia in the CRI system is:The parameters in the CRI model are determined as following: the retardarce coefficient is determined by static isothermal absorption experiment, the velocity of sewage travel through the soil column is determined by permeability test, the vertical dispersion coefficient is determined by test the electric conductivity of tracer in the dispersion experiment, the rate of nitrification and denitrification is determined by test of Baps technology.

依据单一氨氮、硝氮配水条件下的试验结果，引入多孔介质的溶质运移理论及对流-弥散方程，考虑NH4+-N在CRI系统中的运移受到对流和水动力弥散作用的影响，并吸附-解吸、硝化与反硝化3个过程，首次将配水流经CRI土柱的孔隙水流速方程与CRI土柱内发生的、以氧为约束条件的硝化、反硝化过程联系起来，建立了CRI系统一维垂向氨氮运移转化数学模型，表达式为：研究分别通过静态等温吸附实验率定了模型方程中的阻滞系数、通过渗滤试验测定了土柱中的孔隙水流速、通过测定弥散试验中示踪剂的电导率确定了纵向弥散系数、通过气压过程分离技术测定了土柱中的总硝化与反硝化反应速率常数，最后通过测定土柱沿程氧化-还原电位的方法分析氨氮在CRI系统中的运移转化机理。

Some of the commonly used soil fumigants also have high volatilization, which makes it possible to remove fumigants from topsoil by SVE.

本实验采用土柱通风法模拟SVE ，对氯化苦在表层土中的迁移过程和去除效果进行了分析。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失