Terms for subject Scientific containing commands

English	Chinese
air defense command post	防空指挥部
at one's command	可自由使用［支配］
battery command periscope	炮台指挥潜望镜
destruct command transmitter	自毁指令发射机
have a good command of spoken English	熟练掌握英语口语
He commands a large vocabulary.	他掌握的词汇量很大。
operational chain of command	作战指挥链
set point command	设定命令
shell command	外壳命令
starting command	启动命令
system command interpreter	系统命令解释程序
the struggle for command of the air	争夺制空权的战斗