例句 /

The methods such as distn. and silica gel column chromatography were used to sep. the various components of the thickener, and the IR spectrometry, GC-MS combination and ESI-MS were used to certify the structures of the different components.

The methods such as distn. and silica gel column chromatography were used to sep. the various components of the thickener, and the IR spectrometry, GC-MS combination and ESI-MS were used to certify the structures of the different components.

用蒸馏和矽胶柱色谱等方法对增稠剂中的各组分进行分离,并用红外光谱法、气质联用和电喷雾质谱法对各组分进行结构鉴定。