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例有一支刻度均匀但不准确的温度计,当放人冰水混合液中时,示数是-2℃,在标准大气压下,插入沸水中,示数是88℃。(1)若温度计插入热水中示数是70℃,则水的实际温度是多少?(2)若此温度计插入30℃的水中,温度计的示数是多少?1讨论法此不准温度计“刻度均匀”是指刻度线间的间隔相等,“不准”是指每格不是1℃,但格数和温度间存在着定量的对应关系,通过定量的对应关系,可以求出某一示温对应的实际温度或某一实
For example, there is a thermometer with a uniform but inaccurate scale. When the ice-water mixture is released, the indicated number is -2°C. Under standard atmospheric pressure, it is inserted into boiling water and the number is 88°C. (1) What is the actual temperature of the water if the thermometer is inserted into the hot water and the indication is 70°C? (2) If the thermometer is inserted into water at 30°C, what is the number of thermometers? 1 Discussion method This thermometer is not allowed. The term “uniform scale” means that the intervals between the tick marks are equal. “Not allowed” means that each cell is not 1°C, but there is a quantitative correspondence relationship between the number of cells and the temperature. Through the quantitative correspondence, it is possible to find a correspondence of temperature indications. The actual temperature or a real