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一项投资不足100元的小发明。却帮助棉农解决了大问题。棉农每次将棉花装袋时。总要一个人撑开袋口。一个人往袋中装花。最少要2个......
New Technologies and Systems for High Quality Citrus Fruit Production, Labor-saving and Orchard Cons
Novel technologies have been necessary for improving fruit quality and productivity of citrus,labor-saving and orchard c......
