查询词典 backward difference operator

finite difference equation：有限差分方程=>差分方程式

finite difference calculus 有限差分法 | finite difference equation 有限差分方程=>差分方程式 | finite difference equation model 有限差分公式模型

difference group：差群

difference equation 差分方程 | difference group 差群 | difference method 差分法

difference method：差分法

difference in pre ure 压力差 | difference method 差分法 | difference of level 落差

difference method：差分方法

difference in height 高度差 | difference method 差分方法 | difference of elevation 高程差

difference method：差动法

difference in optical path 程差 | difference method 差动法 | difference number 中子盈余

difference quotient：均差

difference product 差积 | difference quotient 均差 | difference schema 差分格式

difference quotient：差分商

difference of level 落差 | difference quotient 差分商 | difference schema method 差分格式法

difference schema：差分格式

difference quotient 均差 | difference schema 差分格式 | difference sequence 差数序列

difference sequence：差数序列

difference schema 差分格式 | difference sequence 差数序列 | difference set 差集

difference sequence：差分顺序

"difference potential ","差电位,电压" | "difference sequence ","差分顺序" | "difference signal ","差信号"

dioptric：折射光学的

dioptre 屈光度 | dioptric 折射光学的 | dioptrics 折射光学

Saturdays are fun：星期六很有趣

6. Saturdays are fun.星期六很有趣. | fun 为不可数名词,"快乐,有趣",在此做表语. | That must be fun. 那一定很有趣.