算盘

在没有电子计算机的艰苦岁月里，老一辈核科学家正是凭借一把把木制算盘演算出了原子弹数据。

zài méi yǒu diàn zi jì suàn jī de jiān kǔ suì yuè lǐ, lǎo yī bèi hé kē xué jiā zhèng shì píng jiè yī bǎ bǎ mù zhì suàn pán yǎn suàn chū le yuán zǐ dàn shù jù.

In the difficult years before electronic computers, the older generation of nuclear scientists calculated the atomic bomb data with a wooden abacus.