| 摘要 |
PROBLEM TO BE SOLVED: To determine whether or not a product has been exposed to the temperature at which the product may be degraded. SOLUTION: A label 102 for identifying the temperature change of the product includes a material capable of changing properties when exposed to a certain temperature, and the material is positioned to function using the message 202 to specify that the item has been exposed to the temperature. COPYRIGHT: (C)2009,JPO&INPIT
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