filter lens TEF/TCF常用TEF/TCF专四

滤光透镜 newfilter lens的英文翻译是什么意思，词典释义与在线翻译：参考翻译滤光透镜 filter lens的用法和样例：例句The focal length of the conelensing lens should be such that the image of the source just fills the projecting lens.
聚光透镜的焦距应使光源的像正好照满放映透镜。