Differential absorption spectrum的意思|示意

Based on the infrared spectrum absorption characterization of methane gas, the long optical distance differential absorption method for methane detection is studied.

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。

Kaolinite from sediments in Prydz Bay and adjacent sea area is identified by X-ray differential thermal analysis, infrared absorption spectrum and electron micrograph.

本文对采自南极普里兹湾及邻近海域沉积物中的高岭石运用X射线衍射、差热分析、红外吸收光谱及电子显微照相等方法进行了鉴定。