CO2 concentration in different depth of the soil was studied using CO2 test tube method for one year in Luota,west Hunan province.是什么意思_CO2 concentration in different depth of the soil was studied using CO2 test tube method for one year in Luota,west Hunan province.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句