Warning: file_put_contents(/www/wwwroot/zidian/oumou.cn/cache/6b749a428786f7363bd4512f66ffa3e4.txt): failed to open stream: No space left on device in /www/wwwroot/zidian/oumou.cn/index.php on line 58 normal incident ray是什么意思，normal incident ray的翻译，normal incident ray音标、读音、用法和例句_歐米惠必应词典
Angle of Incidence The angle between an incident ray and the normal to a reflecting or refracting surface. 入射角度入射光與照射在反射或折射平麪上的正常光線之間的角度。 http://chazidian.com