characteristic absorption spectrum meaning in English

特征吸收光谱

This sensor in this paper is based on the characteristic absorption spectrum of acetylene to detect acetylene content and utilizes the optical waveguide all through the process , so it has the intrinsic anti - explosion function , fast response time and good repeatability
本文研制的吸收型光纤乙炔传感器是利用乙炔气体的特征吸收峰来在线检测乙炔气体的含量的，且整个过程利用的是光波导，因此它有本质防爆功能。在检测乙炔时该传感器响应快、重复性好。