the quality of being bright and sending out rays of light
双语例句
用作名词 (n.)
The effects of material granularities on infrared radiancy and the whys are probed with the help of FTIR instrument through static and dynamic testings. 通过优选材料，借助傅立叶变换红外光谱仪对不同粒径的材料及其组成的发烟剂进行静态和动态测试，对发烟剂材料粒径影响红外辐射的规律及成因进行了研究。
