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关于绿色植物在光下放出氧气的实验我做了如下改进:把金鱼藻或其它沉水植物放在盛满清水的无色玻璃器皿中,把漏斗扣在金鱼藻上面。取一支无底试管,一端塞上打孔的胶塞,在胶塞的孔内插一段约5厘米长的玻璃管,玻璃管端套接一段约10厘米长的乳胶管,胶管端接上一根约3厘米长的尖嘴玻璃管(口径约1毫米)。将这个装好的无底试管套在漏斗颈上,用嘴衔住尖嘴玻管吸气,水即上升到玻璃管及胶管内,用止水夹夹住胶管(如图)。将此装置移到光下,待气体充
With regard to experiments on the release of oxygen by green plants under light, I have made the following improvements: Put goldfish or other submerged plants in colorless glassware filled with water, and buckle the funnel on the goldfish algae. Take a bottomless test tube, plug one end with a rubber stopper, insert a glass tube with a length of about 5 centimeters in the hole of the stopper, and then add a latex tube with a length of about 10 centimeters to the end of the glass tube. The rubber tube is terminated. A tipped glass tube about 3 cm long (about 1 mm in diameter). Place the packed bottomless tube on the neck of the funnel and hold the needle glass tube with the mouth to suck the air. The water rises up to the glass tube and the hose, and the hose is clamped with the water stop clamp (see picture). Move this device to the light until the gas is charged