aperture width meaning in English

开口度
孔径宽度
筛网孔净宽

Secondly , according to the basic theory of the general spectrometer , in this paper we discuss the fundamental , the compositions and the characters of tcecs . we analyze the main influencing factors for resolving power , such as the dispersion of the x - ray on the detection circle , spectra location error and the aperture width etc . and we put out the ways to resolving the problems
接下来，本文根据经典光谱仪器的基本理论，着重讨论了双通道椭圆弯晶谱仪的基本原理，及其基本组成和基本特性，并从x射线波长在探测圆上的弥散度、光度参数与探测角之间的关系、狭缝宽度等方面对谱仪的精度和分辨率的影响作了一定的分析，并提出了解决问题的办法。