ready reckoner

ready reckoner

美 　英

• 网络简便计算表；计算便览

英汉解释

n.	1. a table that shows frequently used arithmetic calculations for easy reference

例句

This is partly because the information on traditional quality standards is not available in one place as a 'ready reckoner'.

造成这种情况的部分原因是缺少关于传统质量标准方面的信息。