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用最小二乘法拟合CH3D分子6428CM－1附近振动带的138个能级,10个振动常数.振动分析阐明该带为CH3D分子C?D对称伸缩振动3V2态,并与局域模振动理论计算值进行了比较.“,”High?resolution Fourier transform spectra of the band of the CH?3D molecule near 6428cm??-1?have been recorded on a BRUKER IFS 120HR Fourier?transform spectrometer with multipass cell with a length of 20m,an unapodized resolution of 0?004cm??-1? was achieved.Vibration?rotation analysis in Local?mode can provide accurate enough initial values to predict the band origins.The vibration?rotation transitions of CH?3D molecule were assigned by using the ground state combination differences and least?squares fitte...