The working principle, basic structure and main technical target of the instrument is introduced.
介绍了该仪器的工作原理，基本结构，主要技术指标。
Main monitoring object, technical and economic target are discussed.
讨论了主要监测内容和预期达到的技术经济指标。
Main monitoring object, technical and economic target are discussed.
讨论了主要监测内容和预期达到的技术经济指标。
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