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将沙漠变成可耕地的聚合物 国外科学家制成了一种吸水性很强的聚合物,它可以吸收相当于自身重量30倍的水份,因此可用来把干旱地区变成可耕地。该聚合物制成细小的塑料粒状
Polymers that turn the desert into arable land Foreign scientists make a highly water-absorbent polymer that can absorb 30 times its own weight of water and can therefore be used to turn arid lands into arable land. The polymer is made into fine plastic granules