查询词典 twenty first

first-mentioned：首述

First Clerk 书记长 | first-mentioned 首述 | first-mentioned 首述的

first framing number：第一号肋数

大管轮 first engineer | 第一号肋数 first framing number | 大副 first mate

first hand tap：头攻丝锥

first half of the month 前半个月 | first hand tap 头攻丝锥 | first harmonic 一次谐波

first hand tap：初绞螺丝攻,头攻

"头档","first gear" | "初绞螺丝攻,头攻","first hand tap" | "第一中压汽缸","first intermediate cylinder"

first ionization constant：第一游离常数

first ionization energy 第一游离能 | first ionization constant 第一游离常数 | first coordination sphere 第一配位圈

first ionization constant：一级电离常数

first ion cyclotron wave ==> 基频离子回旋波 | first ionization constant ==> 一级电离常数 | first iron ==> 初铁

first transition series：第一过渡系

first-order kinetics 一级动力论(学) | first transition series 第一过渡系 | first short period 第一短周期

first runnings：初馏物

first short period 第一短周期 | first runnings 初馏物 | first law of thermodynamics 热力学第一定律

The first time you sell a gun：第一次卖枪的感觉

my first Israeli-made Uzi submachine guns.|以色列制的乌兹冲锋枪 | The first time you sell a gun...|第一次卖枪的感觉 | is a lot like the first time you have sex.|很大程度上就象第一次^做**一样

first time derivative：一阶时间导数

first term 首项 | first time derivative 一阶时间导数 | first treatment 预处理

complex field：复合场;复数域

复介电常数 complex dielectric constant | 复合场;复数域 complex field | 复合物生成滴定 complex formation titration

continuous attenuator：连续减光板

07.104 接收二极管reception diode | 07.105 连续减光板continuous attenuator | 07.106 滤光片filter