yǎn suàn
to calculate
to perform calculations
yān suān
niacin (vitamin B3)
3-Pyridinecarboxylic acid C6H5NO2
nicotinic acid
Zhōng guó Jiào yù wǎng
abbr. for 中國教育和科研計算機網|中国教育和科研计算机网[Zhōng gúo Jiào yù hé Kē yán Jì suàn jī wǎng]
yàn suàn
to verify a calculation
a double-check