Foliar fertilizer A foliar fertilizer is one that is applied to the surface of the plant. a Foliar uptake is important to aquatic plants and when nutrients are sprayed on foliage in horticulture and agriculture

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3Newton's' rings牛顿环 equipment: microscope A-a lens of radius of curvature R B-an accurately plane glass plate Interference pattern:

（1)1887年,A.A. Michelson-E. W.Morley实验否定了绝对参考系的存在; （2)1990年,“紫外灾难”; （3)1896年,首次发现放射性现象

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