... disc, maximally meeting customers’ requirement on evenness, rotation: 5-30 r/min, stepless variable speed1. Arch single workpiece disc, ... autorotation, meeting customers’ requirement on production amount, rotation: 5-30r/min, stepless variable speedVacuum systemDiffusion pump KT-600, ... process, 99 types of program data, precision: 0.5$+1A fixed error.2. Light controller adopts multi-wavelength ...