abacus
noun[C]
uk/ˈæb.ə.kəs/us/ˈæb.ə.kəs/abacusnoun[C](COUNTING TOOL)
asquareorrectangularframeholdinganarrangementofsmallballsonmetalrodsorwires, used forcountingor for doingcalculations
算盘joey333/iStock/Getty Images Plus/GettyImages
Measuring, weighing, & counting devices
- -scopic
- dial
- dipstick
- fitness tracker
- gage
- gamma counter
- gamma meter
- gauge
- gradation
- hydrograph
- indicator
- manometer
- micrometer
- probe
- sensor
- smart meter
- straight edge
- tracker
- voltmeter
- weather balloon
abacusnoun[C](IN BUILDING)
architecturespecialized
aflatslab(=pieceofstone, etc.)at thetopof acolumn
(圆柱)顶板PHAS/Universal Images Group/GettyImages
Parts of buildings: arches, columns & beams
- abutment
- arch
- architrave
- archway
- beam
- colonnade
- column
- Corinthian
- Doric
- ionic
- joist
- keystone
- pillar
- plinth
- portico
- soffit
- torus
- truss
- vault
- vaulting