In the second chapter, we analyze the development COD measuring technique and the current instruments, design the new measuring technique of ultraviolet scanning.
第二章分析了当前COD测量技术与仪器的现状与特点，并提出了紫外扫描式多光谱COD测量技术；
The current types of sand moisture measuring and controlling instruments was briefly introduced, and the development tendency of them was discussed.
简要介绍了目前各类型砂水分测控仪。探讨了型砂水分测控仪的发展趋势。
The conventional optical measuring instruments wholly based on the designs of optical systems and mechanical structures are unsuitable for the current digital times.
由于传统的光学测量仪器都是基于光学系统和机械结构的设计，在当今的数字化时代，使用十分不便。
The conventional optical measuring instruments wholly based on the designs of optical systems and mechanical structures are unsuitable for the current digital times.
由于传统的光学测量仪器都是基于光学系统和机械结构的设计，在当今的数字化时代，使用十分不便。
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