slide-rule
n.
also slide rule, mathematical calculating tool, 1838, from slide, v. + rule, n.. So called for its method of operation. Earlier sliding-rule (1660s).
词汇 | slide-rule |
词根词缀 | Online Etymology Dictionary slide-rule n. also slide rule, mathematical calculating tool, 1838, from slide, v. + rule, n.. So called for its method of operation. Earlier sliding-rule (1660s). |
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