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RESEARCH ON FORMING THEORY OF BENDING CURVE OF CONSTRINGENT FLEXURAL WOOD PLANAR ROBOT The nutritional value of reed canary grass at different growth stages, as determined by in vitro gas production and Cornell net carbohydrate and protein system methods Study on Qualities of Ensiled Alfalfa and Italian Ryegrass at Different Mixed Ratios Discovery of a Cytoplasmically Inherited Virescent Mutant of Soybean