The photoacoustic cell was filled with pure CO instead of gas sample.Fire gases were measured in an absorption path set between the IR source and the cell.是什么意思_The photoacoustic cell was filled with pure CO instead of gas sample.Fire gases were measured in an absorption path set between the IR source and the cell.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句