查询词典 first amendment

first curvature vector：第一曲率向量

第一曲率 first curvature | 第一曲率向量 first curvature vector | 一阶求导;一阶求微 first derivation

First derivative：一阶导数Btu中国学习动力网

first approximation 首近似值Btu中国学习动力网 | first derivative 一阶导数Btu中国学习动力网 | first order differential equation 一阶微分方程Btu中国学习动力网

first excited state：第一激发态

first detection interval 第一探测间隔 | first excited state 第一激发态 | first executive officer 首席执行官

first executive officer：首席执行官

first excited state 第一激发态 | first executive officer 首席执行官 | first fraction 初镏分

first eye lens：首侧复曲面

first electron lens 第一电子透镜,阴极透镜 | first eye lens 首侧复曲面 | first harmonic 基波

First and foremost they needed food：食物是他们最需要的东西

13. first and foremost首先, 第一;最重要的 | First and foremost they needed food. 食物是他们最需要的东西. | I want you to remember to pay that bill first and foremost.首先我要你记得付账.

or your first and last：对你来说是很多个的第一个 还是第一个和最后一个

- I can't. - Okay. Tell me this.|- 我做不到 - 好... | Is Katy just your first, your first of many, or your first and last?|Katy对你来说是很多个的第一个 还是第一个和最后一个? | How should I know?|我怎么...

首先 first and last先后：first and foremost

far and near远近 | first and foremost首先 first and last先后 | free and easy轻松自在

first motion approximation：初动近似

初动 first motion, first movement | 初动近似 first motion approximation | 广义射线 generalized ray

first axiom of countability：第一可数性公理

first approximation 首次近似 | first axiom of countability 第一可数性公理 | first boundary condition 狄利克雷边界条件

phenol red：酚红,苯酚磺酞

phenol reagent 酚试剂 | phenol red 酚红,苯酚磺酞 | phenol red test 酚红排泌试验

accessory equipment：附件

accessory equipment 辅助设备 | accessory equipment 附件 | accessory part 附件