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下面对本刊1968年第5期60页“比重测定中温度校正的改进”一文作些补充。根据不同温度下水的比重表,可以在理论上导出计算水值的式子,亦可用于分析,准确度更好。只要我们准确地测出了某个温度(t+1)℃下的水值P_(t+1),则可按下式求出温度为t℃时的水值P_t P_t=P_(t+1)+0.00025t 例如,在30℃时用实验方法测出水值为P_(30),
The following article on the fifth issue of 1968, 60 pages “correction of the temperature in the determination of the proportion of” one article to make some supplements. According to the water table at different temperatures, the formula for calculating the water value can be derived theoretically, which can also be used for analysis with better accuracy. As long as we can accurately measure the water value P_ (t + 1) at a certain temperature (t + 1) ° C, the water value at the temperature t ° C can be obtained as follows: P_t P_t = P_ (t + 1 ) + 0.00025t For example, when measured at 30 ° C, the water value is P_ (30)