Tucked away in the corner of an optics catalog, Fergus found a special filter that blocks visible light, but not IR or UV.
费格斯在一本塞在某个角落的光学器材目录里发现了一种能阻隔可见光的滤光片。
2
With a combined technological process with bag-type filter, continuous UF and UV sterilization was used for water treatment of marine culture with circulation and utilization.
采用袋式过滤、连续超滤和紫外杀菌组合工艺对工厂化海水养殖水进行循环利用处理。
3
The left image is taken by replacing the 28mm UVfilter with a polarizer.