查询词典 centered difference

finite difference operator：有限差分运算

有限差分法 finite-difference method | 有限差分运算 finite-difference operator | 有限元素法 finite-element method

difference product：差一积

差分表 difference table | 差一积 difference-product | 差分化 differencing

partial difference quotient：偏差商

偏差分方程 partial difference equation | 偏差商 partial difference quotient | 偏微分 partial differential

forward difference quotient：前向差商

forward difference operator 前向差分算子 | forward difference quotient 前向差商 | forward solution 前向解法

reciprocal difference quotient：倒差商

倒差分|reciprocal difference | 倒差商|reciprocal difference quotient | 倒易蒙特卡罗方法|reciprocity Monte Carlo method

difference schema method：差分格式法

difference quotient 差分商 | difference schema method 差分格式法 | differential a roximation 微分逼近

difference table：差分表

difference set 差集 | difference table 差分表 | different 共轭差积

difference of water table：水位差

difference of frequency 频差 | difference of water table 水位差 | different post 不同岗位

phase difference：相位差,相差

phase array sector scanner 相阵扇形扫描仪 | phase difference 相位差,相差 | phase difference microscope 相位差显微镜

potential difference：势差

2.很多同学并不明白电势差(potential difference)和电势(potential)的分别,更误以为两者其实是相同的,其实是大错特错!其实研究电势差(potential difference)和电势(potential)就可以明白电路(circuit)的运作,对找出题目的答案,非常有帮助,

I slipped：我说溜了嘴

It just came up.说溜了嘴 | I slipped!我说溜了嘴 | My alarm (clock) didn't go off.我的闹钟没响

Perform CPR：(做心肺复苏急救)(就是传说中的人工呼吸?想尝试一下,谁让我尝试一下,征女性)

11. Sharpen a knife(磨刀)(小时候干过) | 12. Perform CPR(做心肺复苏急救)(就是传说中的人工呼吸?想尝试一下,谁让我尝试一下,征女性) | 14. Maneuver a car out of a skid(操控打滑的汽车)(没有车)