非常光线光谱
extraordinary ray spectrum
非常光线舟射率
principal index for extraordinary ray
X射线荧光光光谱
X-ray fluorescence spectrometry
射线线光谱
characteristic spectrum x
x ray line spectrum x
祖弟卡光线光度计
gegenschein-zodiacal light photometer
不锈钢扁线及半圆线常用材料
Commonly used materials for Stainless Flat Wire & Half Round Wire