order n.顺序；条理；订单；命令；秩序；阶层；[生]目；点的东西v.命令；定购；调整；整理；点餐；预定，订货
双语例句
Then we discuss the necessary conditions for the limit curve to be C0,C1,C2 respectively and give the derivative and second derivative of the limit curve at vertex and midpoint. 随后我们讨论了极限曲线连续，一阶连续，二阶连续的必要条件，并给出了极限曲线在顶点以及中点处的一阶导数与二阶导数显式公式。
The first order derivative spectrophotometry was used for determination of ofloxacin in its gel.The interference of other ingredients can be eliminated. 采用一阶导数分光光度法直接测定氧氟沙星凝胶剂的含量，能消除其它组分的干扰。
