镜头焦距 FOCAL LENGTH ; Lens focal length ; LENS FOCUS ; Lens Mount
变焦镜头 zoom lens ; convertible lens ; Vari-focal lens ; STANDARD ZOOM
头批头焦 down pipe
镜头焦距转换率 the crop factor
指镜头焦点间隔 f
定焦镜头 Prime lens ; Fixed Focal Lens ; mm Super Speed Prime Lenses ; prime lens
照相机镜头焦点长度 camera lens focal length
镜头变焦 Lens Iris ; Lens Zoom ; NO
镜头焦段线框照明系统 bright line Illuminator
聚焦探头 Focusing probe ; focusing type probe
它们其实焦不离孟，孟不离焦（原文：同一束光的两头），总是翩翩起舞，共创美好生活。
Always dancing together to create a beautiful life experience.
然后就是相机、长焦镜头、带摄像头的手机。
Then there is the camera, the telephoto lens, and the cellphone with a camera.
焦面上的成像质量分析是红外导引头测试的重要内容。
The analysis of the image quality on focus plate is very important in infrared seeker measurement.
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