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| Russian | English |
| красно-черное дерево | red/black tree |
| красно-чёрное дерево | red/black tree (A binary search tree which uses a one-bit flag on each node to identify the node by color: either red or black. A set of constraints on node color helps form an approximately balanced binary tree) |
| красный фильтр | Red filter (A filter that is used in B&W photography. Increases contrast more than any other filter) |
| усиление красного | red gain (The factor by which the red pixel value has to be multiplied to achieve R=G=B values) |