渗透作用实验是高中阶段难度最大的演示实验。其实，只要方法得当，准备起来也是轻而易举的事。l车留痕的选择半透膜的选择是本实验成功的重要一环。半透膜可选择的材料也很多，如鸡蛋的卵壳膜、鸡的喷失、动物的膀优、肠衣、鱼的模，以及种子的种皮等。经过多次比较试验，还是 Penetration experiment is the most difficult demonstration experiment in high school. In fact, as long as the method is properly prepared, it is easy to prepare. l Choice of car traces The choice of semipermeable membrane is an important part of the success of this experiment. There are also many materials that can be used for semipermeable membranes, such as the egg shell membrane of eggs, the loss of chickens, the animal’s bladder, casings, fish molds, and seed coats. After many comparison tests, still