词汇	机罩支架
释义	机罩支架 hood support
随便看	focal-length focal length band focal length calibrated focal length calibration focal length determination focal length equivalent focal-length extender focal length gauge Focal length in mm film focal length of lens focal length of thermal lens focal length range focal length ratio focal lengths focal length setting focal length tolerance focal length, variable focal lens antenna focal lenth focal lesion focal lesion keratectomy focal lesions focal lesion unit focal line focal line,anterior