cirscale ; circular scale
圆形刻度盘 circular scale ; circular scdark happen to beer
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机器的传动装置极富创意,由指针和刻度盘组成的装置连接两个齿轮,其引起的刻度变化代表月球的运行,这符合希帕科斯提出的月球在椭圆形轨道上绕地球运转的模式。
An ingenious pin-and-slot device connecting two gear-wheels induced variations in the representation of lunar motions according to the Hipparchos model of the Moon's elliptical orbit around Earth.
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