本文报道了研制的土壤气体采集装置。
This paper reports the development of a soil gas sampling device.
准确地采集土壤气体样品是研究土壤气体特征的前提。
Accurately collecting soil gas samples is essential to the study of the characteristics of soil gas.
有机农业还减少了土壤污染和水污染，降低了温室气体排放量。
Organic agriculture also creates less soil and water pollution and lower greenhouse gas emissions.
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