1) central derivative
中心差商
2) non-central difference quotient
非中心差商
1.
This article introduces the concept of non-central difference quotient convergence and discusses the relation between non-central difference quotient convergence and differentiability.
引入非中心差商收敛的概念 ,讨论了非中心差商收敛与可微的关
3) noncentral difference quotients convergence
非中心差商收敛
4) Business center
商业中心
1.
A study of the traffic environmental impact assessment on Changchun business center;
长春商业中心交通环境影响分析评价研究
2.
Distribution Optimization of Business Center in Kunming;
论昆明城市商业中心空间布局优化
5) commercial center
商业中心
1.
On the design principle of the urban commercial center;
浅谈城市商业中心的设计原则
2.
The planning modification of Xiazhan commercial center in Yangquan;
阳泉市下站商业中心规划改造
3.
Exploration of the related problems of middle and small old city commercial center district remaking
中小城市老城区商业中心改造有关问题的探索
补充资料：差商
差商就是因变量的改变量与自变量的改变量两者相除的商。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条