A measurement method of thoron exhalation rate is developed based on the characteristic of thorium C which emits a α particle with higher energy than those of α particles released from radon and radon progenies.
利用气土子体ThC'衰变产生的α粒子能量较氡及其子体衰变产生的α粒子能量高的特点,发展了一种测量介质表面气土析出率的方法。
Variation Characteristics of Soil CO_2 and Its Plow Dynamic Mechanism in the Farmland
农田土壤空气中CO_2变异特征及移动的动力学机制
Effect of free air carbon-dioxide enrichment on soil available K in rice-wheat rotation system
开放式空气CO_2浓度升高对水稻/小麦轮作土壤速效钾的影响
The effects of elevated atmospheric CO_2 concentration on wheat straw decomposition and nitrogen distribution in paddy soil
大气CO_2浓度升高对稻季土壤中麦秸降解及氮素分趋的影响
raw materials taked from the soil and air
在土壤和空气中得到的原料
New Technique for CO_2 Mitigation--The Research of CO_2 Sequestration in Soil;
CO_2减排新技术——土壤中CO_2的固定实验研究
Experimental study of the air entrapment effects on soil structure and infiltration
土壤中空气对土结构和入渗过程的影响
Air, water and soil are nonliving things.
空气，水和土壤是非事物。
Study on removal of CO_2 greenhouse gas by mixture of ammonia and soil
氨水土壤混合物脱除CO_2温室气体的实验研究
Effect of Elevated Atmospheric CO_2 Concentration on Soil Nitrogen Around Roots of Crops
大气CO_2浓度升高对作物根际土壤氮的影响
Mulch provides a thick barrier between the soil and the air.
农地膜作为土壤和空气中得一层薄的隔离。
Determination of Chloropicrin in Soil by Headspace Gas Chromatography
顶空气相色谱法测定土壤中氯化苦残留
The Study on the Change of CO_2 Release from Soil in Guanzhong and Luochuan Area;
关中与洛川地区土壤CO_2释放量的变化研究
Study on Supercritical CO_2 Fluid Extraction of Bensulfuron-Methyl in Soil
超临界CO_2流体萃取土壤中苄嘧磺隆的研究
Progress on Carbon Dioxide Fixation by Aquatic-Microalgae
水生微藻固定空气中CO_2的研究进展
Effects of Elevated CO_2 on Transformation and Bioavailability of Copper and Cadmium in Soil-wheat System;
大气CO_2浓度升高对土壤—小麦系统铜、镉转化与生物有效性的影响
Responses of Soil Microbes and Enzyme to Elevated Atmospheric CO_2 Concentration and Temperature;
土壤微生物和酶对大气CO_2浓度与温度升高的响应
Changing characteristics of CO_2 flux from the interface of soil-atmosphere at arid area in north temperate
北温带干旱地区土壤-大气界面CO_2通量的变化特征
Effects of elevated CO_2 on soil C,P and K around the roots of rice and wheat
大气CO_2浓度升高对稻麦根系周围土壤C、P、K的影响