论文部分内容阅读
农村地区常有用地窖储藏农作物的习惯(如图)。由于植物的呼吸,地窖内会不断地积蓄 CO_2气体,浓度过高时将威胁到人的安全。为试探 CO_2
Rural areas often have a habit of storing crops in cellars (pictured). Due to the respiration of plants, CO_2 gas will accumulate in the cellar. If the concentration is too high, human safety will be threatened. To test CO_2