ROR(Rate of Rise) 升溫速率
ROR(Rate of Rise)升溫速率，即每分鐘的升溫速率 ，國外常用30秒為單位。圖中下面那條曲線即ROR曲線、圖中上面那條曲線是烘豆溫度曲線 。此圖為烘豆知名大師Scott Rao說是他喝過最難忘的一鍋咖啡。
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