In this paper we describe a method to improve the recording sensitivity by twice reflections of light ray without changing the inherent sensitivity of the instrument.
本文在基本不改变仪器固有灵敏度的前提下，采取记录光线二次反射法，以提高仪器的记录灵敏度。
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This paper briefly introduces the concrete application of CPLD in the design of hardware and software of the recordinginstrument system, and expounds the working principle of CPLD.