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1. The Chinese abacus eveloped from bamboo counting sticks. Along with advanced handicraft technologies, and economy development, mathematical calculations become more and more complicated, using an abacus was much faster then placing bamboo counting sticks, so people invented the abacus.
2.算盤是怎麼跟隨時代而變的?

2006-12-31 16:33:39 補充：
faster then placing bamboo sticks 改成:faster than placing bamboo sticks

The Chinese abacus is from calculated plans the development to come. Along with the handicraft industry, the commercial development, the mathematical computation is day by day complex, dials the bead the speed the pendulum to calculate far planned the convenience to be quickly more than, therefore the people have invented the abacus calculation.

算盤通過thr年齡怎麼演變了？

2006-12-31 16:22:46 補充：
算盤通過年齡怎麼演變了？ NOT ：算盤通過thr年齡怎麼演變了？