在整个比对过程中，我们希望得到被测电池电压差的稳定性指标。方法是从几个冗余的读数计算出其标准偏差。
Throughout the entire intercomparison process, it's desirable to establish the stability of a measured cell difference by calculating a standard deviation across several redundant readings.
热电偶随时间而老化，读数会偏差。
同时尽量避免读数与预期数据有偏差。
At the same time you must resist letting your expectations color or bias your readings;
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