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first-formed oil：初次成油期

first-cycle response 第一周期增产效果 | first-formed oil 初次成油期 | first-guess model 初始假想模型

first-mentioned：首述的

first-mentioned 首述 | first-mentioned 首述的 | first-mentioned proceedings 首述法律程序

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

menadione：甲萘醌,维生素

membrane insertion signal 膜插入序列 | menadione 甲萘醌,维生素K3 | Mendelian 孟德尔

NN：abbr. neutral network; 神经元网络

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