COLLIMATION
Before
1: S
beam
After
2: SU
error, system
Surrounder Phrases
narrow slit, beam, slice, rectangular, anglethin slice, slit, rectangular, beamdetector slit, system, anglerectangular slit, beamslit beam, methoderror detector, methodbeam angle, detector, methodslice thin, methodelectronic detector, beam, systemproper angle, methodtight beam, closeangle beam, errorhigh angle, beam