This paper describes in detail how to adjust spectrometer so as to keep a strict vertical between optic axis and rotation axis of telescope.
本文详细描述如何调节分光计以使望远镜光轴与其旋转轴严格垂直。
CNC Vertical Lathe, as a precision machining, has strict requirements in machining accuracy.
作为精密机械加工的数控立式车床，对加工精度有着严格的要求。
CNC Vertical Lathe, as a precision machining, has strict requirements in machining accuracy.
作为精密机械加工的数控立式车床，对加工精度有着严格的要求。
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