虽然我国有丰富的水资源,可人均占有量并不大,有些地区还严重缺水。我想发明一种能够净化水的半透膜,更好地节约水资源。从生物课上,我知道了有一种半透膜是只能让水分子通过的,其他的分子离子都无法通过。那么,我们可以通过技术手段将这种半透膜的性质和功能强化,水分子能轻而易举地 Although China has abundant water resources, its per capita occupancy is not large, and some regions are also seriously deprived of water. I want to invent a semipermeable membrane that can purify water and save water resources. From the biology class, I learned that there is a semi-permeable membrane that only allows water molecules to pass, and other molecular ions cannot pass. Then, we can strengthen the properties and functions of this semipermeable membrane through technical means. Water molecules can be easily