nonius

听听怎么读

英 ['n??n??s]

美 ['no?n?rs]

是什么意思

（计算尺等上的）游标；

英英释义

Nonius

Nonius is a device, named in honour to its author and inventor Pedro Nunes (Latin: Petrus Nonius), created in 1542 as a system for taking fine measurements on the astrolabe which could largely improve its accuracy. Later on, it was adapted in 1631 by the French mathematician Pierre Vernier, to create the vernier scale.

以上来源于:Wikipedia

学习怎么用

权威例句

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