prefocus

vt.

使预先聚焦，预先调节…的焦距；预聚焦；

Prefocus projection lamp
Prefocus projection lamp
A high-resolution electron gun for thermoplastic recording using prefocus deflection
Dimensions Of Prefocus Lamp-caps And Lampholders (for Voltages Not Exceeding 250 Volts)
Prefocus Cap Pk22s; Assembly Of Ring And Cap On Finished Lamp
Iec Lamp Caps; Prefocus Cap Pkx22s; Assembly Of Ring And Cap On Finished Lamps
Prefocus and verbal orientation in Sarangani Bilaan
A Theoretical and Experimental Analysis of the 28% Focus Ratio High Voltage Bipotential CRT Gun Using the Thick G2 Prefocussing Lens
System and computer readable medium for pre-focus of digital slides
Pre-focus lens in a he-crt