first-grade flight engineer的意思|示意
美 / /
英 / /
一级飞行工程师
first-grade flight engineer的网络常见释义
一级飞行机械员 四级飞行通信员[初]fourth-grade flight radioman 一级飞行机械员[高]first-grade flight engineer 二级飞行机械员[中]second-grade flight engineer ..