Assertion: collimator | /r/CapableOf | precess like top
Facets:
Source sentences:
text: Due to clearance between the collimator and holder, the collimator may precess like a top, and even a good collimator's spot may travel in a circle.
text: The collimator may precess like a top as it is rotated, and then even a good collimator's spot can travel in a circle.