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Terms for subject General containing focal length | all forms | exact matches only | in specified order only
| English | Chinese |
| a 1-inch focal-length lens | 焦距 1 英寸的透镜 |
| dynamical correction of focal length | 焦距〔的〕动态校正 |
| focal-length | 焦距 |
| variable focal length lens | 可变焦距透镜 |