飞机主机械操纵系统
main mechanical manipulating system of aeroplane
航政主管机关
office of maritime administration
集装箱装卸机主机架
container handler main frame
中央主管机关
central governing authority
主管机关
Responsible agency
enforcement organ
Administration
authority competent authorities
authority
agency-in-charge
主管机关批准
Approval by Competent Authority