This paper reports the development of a soil gas sampling device.
本文报道了研制的土壤气体采集装置。
Use radon measurement to explore oil and gas, one have to improve the sampling device and test conditions.
测氡法在应用于油气勘探时，取样装置及测试条件均须改进。
Use radon measurement to explore oil and gas, one have to improve the sampling device and test conditions.
测氡法在应用于油气勘探时，取样装置及测试条件均须改进。
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