球形反射器之子反射器校正器
spherical reflector
corrector subreflector of
9102型高压校正器
Model 9102 High-voltage Calibrator
部件校验设备
UCE Unit Checkout Equipment
低频阻抗校正器
low-frequency impedance corrector
电阻衰减器校正装置
calibrating set for resistance attenuator
调速器校正程序
governor alignment procedure