1　实验装置的改进如图 1所示 ,在较粗玻璃导管的两端 ,一端用附有止水夹的乳胶管封住管口 ,另一端套上单孔橡胶塞 ,塞紧装有密度较大的红棕色二氧化氮的瓶子。在乳胶管的另一端套上同样的带有橡胶塞的玻璃导管 ,塞紧装有空气的瓶子。实验时 ,只需打开乳胶管上的图 1止水夹 ,两 1 The improvement of the experimental device is shown in Fig. 1. At both ends of the thicker glass conduit, one end is sealed with a latex tube with a waterstop clip, and the other end is covered with a single-hole rubber stopper. Large red-brown nitrogen dioxide bottle. At the other end of the latex tube, insert the same glass tube with a rubber stopper and plug the air-filled bottle. During the experiment, simply open the stopcock on the latex tube, Figure 1