ready reckoner
英 [ˌredi ˈrekənə(r)]
美 [ˌredi ˈrekənər]
n. 计算速查手册; 简便计算表
牛津词典
noun
- 计算速查手册;简便计算表
a book or page that shows common calculations with their results, so that answers can be found quickly
英英释义
noun
- a handbook of tables used to facilitate computation
Synonym: reckoner
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