光声技术由于其高灵敏度的特性目前被广泛应用于痕量气体检测领域。
Photoacoustic technology is widely used in fields of trace gas detection due to its high sensitivity.
基于甲烷气体的红外光谱吸收特性，研究了长光程差分吸收式甲烷气体检测的方法。
Based on the infrared spectrum absorption characterization of methane gas, the long optical distance differential absorption method for methane detection is studied.
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