mental calculation中文什么意思

心算

• mental:    adj. 【解剖学】颚的，颏的。
• calculation:    n. 1.计算，计算法。 2.推定， ...
• quick mental calculation:    快速心算

例句与用法

1. She did a swift mental calculation .
   她头脑里敏捷地盘算了一下。
2. The neural correlates of mental calculation : an fmri study on the effects of aging and task difficulty
   青老年组不同难度下心算活动的脑功能磁共振成像研究
3. After a mental calculation , fermi announced to his team that the bomb ' s energy had equated 10 , 000 tons of tnt
   经过大脑计算，费米向他的队员们宣布爆炸的原子弹的能量相当于1万吨烈性炸药。
4. Our place in the golden age is no longer a matter of mental calculation , but a beautiful voyage home guided by our innermost nature . trust seems to be paramount on this exciting new journey for our minds no longer comprehend what may happen , how it will or why
   在这个令人兴奋的全新旅程中，最重要的是对上帝的信心，因为我们的头脑对于人生旅程中可能发生的情况，例如：事情是如何发生为何发生等等情况，往往无法完全理解。

百科释义

Mental calculation comprises arithmetical calculations using only the human brain, with no help from calculators, computers, or pen and paper. People use mental calculation when computing tools are not available, when it is faster than other means of calculation (for example, conventional methods as taught in educational institutions), or in a competitive context.