Changes in non-waterlogged soil air carbon dioxide (CO 2) concentration were studied in a rice-wheat rotation ecosystem of southeast China.
通過同步觀測耕層土壤空氣CO2 濃度廓線、土壤溫度和土壤含水量 ,主要研究和討論了華東地區(qū)典型稻麥輪作農(nóng)田旱地階段的土壤空氣CO2 濃度的變化規(guī)律 ,及土壤溫度和含水量對它的影響。
Such CO2concentration in the soil air was still suitable for crop growth.
在玉米生育期內(nèi)測定了０～１００ｃｍ土層土壤空氣組成、土壤通氣狀況的呼吸強(qiáng)度。
Study on Soil Air Reduction Infiltration Characteristics under Different Irrigation Method;
不同灌溉方式入滲條件下的土壤空氣阻滲特性試驗研究
Air, water and soil are nonliving things.
空氣，水和土壤是非事物。
waste matter that contaminates the water or air or soil.
污染水、空氣或土壤的廢物。
raw materials taked from the soil and air
在土壤和空氣中得到的原料
Pollution hurts the Earth's land, water and air.
描述:污染對土壤、資源和空氣造成破壞。
Creative Education Needs Air,Soil and Water;
創(chuàng)新教育需要“空氣”、“土壤”和“水分”
Experimental study of the air entrapment effects on soil structure and infiltration
土壤中空氣對土結(jié)構(gòu)和入滲過程的影響
Given earth, air and due temperature, the plant must grow.
有土壤，空氣和適宜的溫度，植物一定會生長。
The very thin coverings of air, soil and water
由空氣、土壤和水組成的非常薄的覆蓋層
Air, water and soil are parts of our environment, too.
空氣，水和土壤也是我們的環(huán)境的一部份。
Sometimes the air chamber above the soil sample is connected to a regulated pressure source.
有時，土壤試樣上面的空氣箱與調(diào)壓源相連接。
Mulch provides a thick barrier between the soil and the air.
農(nóng)地膜作為土壤和空氣中得一層薄的隔離。
Study on the Soil Dust Profiles for Source Apportionment of Ambient Particulate Matter;
城市空氣顆粒物源解析土壤風(fēng)沙塵成分譜研究
Determination of Chloropicrin in Soil by Headspace Gas Chromatography
頂空氣相色譜法測定土壤中氯化苦殘留
They improve air and water quality; trees stabilize the soil and prevent erosion.
他們能凈化空氣，涵養(yǎng)水源；他們的根可以保持水土、止土壤腐蝕。
A space in air, water, or soil containing pollutants released from a point source.
含污染質(zhì)的空氣空氣、水或土壤中含有從一個點狀源釋放出的污染物的空間
Something that pollutes, especially a waste material that contaminates air, soil, or water.
污染性物質(zhì)造成污染的物質(zhì)，尤其指一種污染空氣、土壤或水的廢物
fine powdery material such as dry earth or pollen that can be blown about in the air.
細(xì)小的粉末狀材料，如干燥的土壤或花粉，在空氣中能被吹起。