校准英文单词简写

In the fields of engineering, industry and statistics, the accuracy of a measurement system is the degree of closeness of measurements of aquantity to its actual (true) value. The precision of a measurement system, also called reproducibility or repeatability, is the degree to which repeated measurements under unchanged conditions show the same results.[1] Although the two words can be synonymous in colloquial use, they are deliberately contrasted in the context of the scientific method.Accuracy准确度 is the difference between the measured value and the true value of a tested material.Precision精确度 is the repeatability of successive measurements under the same conditions.测量的精密度、准确度和精确度这是人们在测量中常常容易混淆的三个名词，虽然它们都是评价测量结果好坏的，但涵义有较大的差别。1．测量的精密度高，是指偶然误差较小，这时测量数据比较集中，但系统误差的大小并不明确。2．测量的准确度高，是指系统误差较小，这时测量数据的平均值偏离真值较少，但数据分散的情况，即偶然误差的大小不明确。3．测量精确度（也常简称精度）高，是指偶然误差与系统误差都比较小，这时测量数据比较集中在真值附近。

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calibrate 英 [ˈkælɪbreɪt] 美 [ˈkæləˌbret] vt. 校准; 使标准化; 使合标准; 测量（枪的）口径; [例句]Pesticide levels in food are simply too difficult to calibrate.食品中杀虫剂的含量很难精确测定。[其他] 第三人称单数：calibrates 现在分词：calibrating 过去式：calibrated 过去分词：calibrated英英释义：If you calibrate an instrument or tool, you mark or adjust it so that you can use it to measure something accurately.

虽说两者都有“准确、精确”的意思，但accurate用的多是“准确”，precise用的多是“精确”。你看像最近这段外媒新闻里说到中国的导弹，说到性能，一般不用accuracy，而用precision，这和中文说的“精确”是吻合的；说到显微手术也多数用precision。而普通打靶啊，枪械性能啊，就用accuracy多了。直径10公里的靶区，导弹落在哪儿都能说accuracy高，但非得落到正中间才能说precision高，呵呵，就这区别。