粗调焦旋钮 coarse-focusing knob

精调焦旋钮 fine-focusing knob

调焦旋钮 focusing knob

聚焦旋钮 FOCJS ; focus knob ; focusing knob

再聚焦旋转光束 refocused revolving beam

调焦螺旋 [光] [摄] focusing screw ; focusing drive knob

螺旋型调焦 Helical Focus

旋转焦炭炉 revolving coke furnace

螺旋调焦座 helical focussing mount

弱聚焦回旋加速器 [核] weak-focusing cyclotron