infra-red filter 红外滤光器
snap-on red filter 快装式红色滤光片
red filter treatment 红色滤光片疗法
Infra-red filter tube 红外光滤光筒
blue-red filter 红滤光体
deep red filter 深红滤光镜
dark red filter 深红色滤光镜
snap on red filter 快装式红色滤光片
The red filter, the loss-90 percent, only 200 lumens of red light.
经红色滤光片后,光损失90%,只剩下200流明的红光。
You have to put a deep red filter on the lens to increase the contrast.
你还需要在镜头上加一块深红色的滤光镜来提高反差。
Meanwhile, applied traditional complex treatment, which involved covering the eyes, fine sight training, ocular spectra and red filter treatment.
同时进行传统方法治疗:遮盖,精细目力训练,后像红闪仪训练;
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