focal length
透镜焦距
物焦距
天线焦距
焦点距离
焦距
焦
凹面反射镜
焦深
焦长
focal length calibration
focal length of objective glass
thermal length expansion
Laser thermal lens spectrometry
Laser thermal lens spectrophotometry
anchorage length and lap length
ratio of pulse length to the total cycle length
span length of length bar
Thermal gravimetric and differential thermal analy
160120 focal plane array
35mm AF Focal Plane Cameras
35mm Multi Focal Points Lens Shutter Cameras
35mm NON-AF Focal Plane Cameras
35mm Single Focal Point Lens Shutter Cameras
Bi-frequency focal ultrasound