abacus <abaci [ˈæbəsaı] or abacuses> [ˈæbəkəs] 名词
- abacus
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The name and logo of this software are based on the abacus calculation tool.
en.wikipedia.org The semi-circular arch which rises from the abacus has the same seried planes and circular mouldings as the jambs.
en.wikipedia.org The long and fascinating history of the abacus also turns up time and time again in counting history.
en.wikipedia.org There were 1,000 to 1,200 children learning to use the abacus and algorism for mathematics.
en.wikipedia.org Their abacus blocks are decorated with volutes containing human and animal figures.
en.wikipedia.org