Assertion: electronic blackboard eraser | /r/CapableOf | provide dual effect
Facets:
value: for dust collecting
type: PURPOSE
value: for erasing
type: PURPOSE
Source sentences:
text: The electronic blackboard eraser thus constructed is easy to assemble, and provides dual effect for erasing and dust collecting, and may be operated at a low noise level.
text: The electronic blackboard eraser thus constructed is easy to assemble, and provides dual effect for erasing and dust collecting, and may be operated at a low noise level.