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- W2380631172 abstract "Principles of measuring gas(methane) in coal mine according to photoacoustic spectroscopy via laser diodes are introduced.Outlines of this measuring system is given.In the system,laser diodes are used as power sources and the laser beams are coupled into resonant PA cell by optical fibers.Photoacoustic signal detected by microphone are analyzed by computer,thus a noncontact,online and automatic gas monitoring system can be realized.The real methane concentration in coal mine can be acquired." @default.
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- W2380631172 date "2006-01-01" @default.
- W2380631172 modified "2023-09-27" @default.
- W2380631172 title "Study on Measuring Gas in Coal Mine by Laser Photoacoustic Spectroscopy" @default.
- W2380631172 hasPublicationYear "2006" @default.
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