| 摘要 |
PROBLEM TO BE SOLVED: To provide an imitation rice for setting a primary standard and a sub instrument without collecting a rice grain sample. SOLUTION: The imitation rice for setting grade discrimination in a rice grain grade discrimination apparatus for discriminating a grade of each rice grain based on light receiving data obtained by irradiating the carried rice grain with light has a middle break grain grade, comprises half elements bonded and formed by an artificial material and has a rice grain shape. An imitation crack corresponding to a defect formed by a material or a slit whose transmissivity is lower than a normal part, is embedded. COPYRIGHT: (C)2004,JPO&NCIPI
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