Assertion: weir | /r/CapableOf | produce large changes
Facets:
value: by comparison
type: MANNER
value: relatively
type: DEGREE
value: in head
type: LOCATION
Source sentences:
text: By comparison, a weir or flume produces relatively large changes in head (liquid elevation) for small changes in flow near the bottom end of the range, because the function has a very steep slope (large dH/dQ ) at that end.