수동 계산 도구인 주판.
A manual computing device consisting of a frame with beads sliding on wires or rods, used for performing arithmetic calculations.
예문:
"The merchant used an abacus to quickly tally the total cost of the spices."
"Learning to use an abacus can help children develop a strong mental image of numbers."
기둥 머리 위의 평평한 판석인 관판.
The flat, square slab forming the uppermost member of the capital of a column, supporting the architrave.
예문:
"In the Doric order, the abacus is a simple square slab without any ornamentation."
"The weight of the heavy stone architrave rests directly upon the abacus of each column."