焦距-焦长 external workfocal length
离焦补偿 defocusing compensation
螺距补偿 pitch compensation; screw distance compensation
双源距补偿中子测井 cDN; compensated dual neutron log
相间多相补偿距离继电器 polyphase compensated distance relay
补偿补助 compensation benefits
[可]变焦距透镜 variable focus lens; vari-focal lens
凹透镜焦距 focal length of concave lens
半焦焦粉 semi--coke powder
变焦距 zoom; changing focal length; step zoom; variable distance; Variable focal
变焦距变波长的非准确联合变换相关 inaccurate joint transform correlation with change
变焦距光学系统 variable focal length optical system; Zoom optical system; zoom system
变焦距镜头 varifocal lens; zoom lens; Zoom lenses; zooming lens
变焦距控制 Zoom control
变焦距立体显微镜 zoom stereoscopic microscope
变焦距视频 ZV Zoom Video
变焦距透镜 zoom lens; variable focus lens
变焦距望远镜 Zoom telescopes
变焦距物镜 varifocal objective; zoom lens; zoom objectives