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Terms for subject Oil / petroleum containing 焦距 | all forms | in specified order only
ChineseEnglish
可变焦距寻像器zoom finder
可变焦距摄影机镜头zoomer
可变焦距放大观测器zoom macroscope
可变焦距立体镜zoom stereoscope
焦距focometer
近距聚焦摄像管proxicon