a calculator that performs arithmetic functions by manually sliding counters on rods or in grooves
a tablet placed horizontally on top of the capital of a column as an aid in supporting the architrave
其他語種釋義
abacusとは意味:abacus n. そろばん. 【動詞+】 ◆The abacus was employed in England until late in the 12th century. そろばんは 12 世紀末までイギリスで使われていた ◆use an abacus to calculate a sum 金額を計算するのにそろばんを用いる. 【前置詞+】 ◆The calculations are do...