abacus computation的意思|示意

But the Ming Dynasty intermediate stage will later emerge each kind of abacus calculation work will be applies directly in aspect and so on agriculture, labor, trade computation technologies.

而明代中期以后兴起的各种珠算著作则更是直接应用于农、工、商业等方面的计算技术。

Mental Arithmetic is a method of computation through "visualization of abacus" to achieve the result of computing.

“珠心算”是一种利用“脑中算盘”，达成运算目的的心算方法。