文件名称:guang-sheng-guang-pu
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中红外光经过甲烷吸收
后，产生的声波信号经麦克风检测，由锁相放大器对信号进行采集并输入计算机进行处理。按信噪比为１计算，得到甲烷的探测极限为１８９ｎｍｏｌ·ｍｏｌ－１。
-The mid-infrared light through the methane absorption, the acoustic signal generated by the microphone detected by a lock-in amplifier of the signal acquisition and input computer for processing. The SNR is calculated to give the methane detection limit 189nmolmol-1.
后，产生的声波信号经麦克风检测，由锁相放大器对信号进行采集并输入计算机进行处理。按信噪比为１计算，得到甲烷的探测极限为１８９ｎｍｏｌ·ｍｏｌ－１。
-The mid-infrared light through the methane absorption, the acoustic signal generated by the microphone detected by a lock-in amplifier of the signal acquisition and input computer for processing. The SNR is calculated to give the methane detection limit 189nmolmol-1.
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