So as soon as you get away from first order kinetics and go to second order kinetics with multiple steps, it's a mess.
你一旦离开一级动力学,到有多个步骤的二级动力学,它是混乱的。
This method could efficiently overcome the numerical oscillation and improve the calculation accuracy in spatial to second order.
普通的迎风差分格式只有一阶精度,修正的迎风差分格式可以把空间的计算精度提高到二阶。
The influence of lens dispersion up to second order on the spatial and temporal intensity distribution of the femtosecond Gaussian beam was analyzed.
分析了单透镜色差和群速度色散对超短脉冲高斯光束聚焦的时间分布及脉冲波面的影响 ;
I actually need to check the second order condition.
实际上我们还需要验证二阶条件
You've learnt what the words mean, but you have abstract and unconscious rules that take these words, figure out the order, and in a fraction of a second, give rise to understanding.
虽然你已经知道了这些单词的意思,但却是你所拥有的抽象且无意识的规则,让你认清单词,确认语序,然后在一瞬间让你理解整个句子
I differentiate a second time and check the sign, so the second order condition, I differentiate this expression again with respect to q1.
我们对它进行二次求导然后看符号,这个式子的二阶导数,就是一阶导数再对q1进行求导
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