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苏联乌兹别克农科院棉花研究所设计出一种太阳能辐射机,专门用于照射棉籽。该机把太阳光分滤出单色的红色波段的光束,此种红光比自然太阳
Cotton Institute of Uzbekistan Academy of Agricultural Sciences of the Soviet Union designed a solar radiation machine, specifically used to irradiate cottonseed. This machine filters out the sun’s rays in a monochromatic red band of light, the red light than the natural sun