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单词 Bygrave slide rule
释义

Bygrave slide rule

英语百科

Bygrave slide rule

Bygrave A.M.L. Position line slide rule Mk. IIA serial No. 355

The Bygrave slide rule is a slide rule named for its inventor, Captain L. G. Bygrave of the RAF. It was used in celestial navigation, primarily in aviation. Officially, it was called the A. M. L. Position Line Slide Rule (A.M.L. for Air Ministry Laboratories).

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