外国经营人所在国民航主管部门颁发的危险品航空运输许可或者等效文件；

The permission for the transport of dangerous goods by air issued by the civil aviation competent authority of the State of the foreign operator or the equivalent document;

youdao

民航主管部门已受到来自欧洲航空公司的强大压力，其中一些航空公司已经成功在假定的危险区进行了试飞。

The civil-aviation authorities had come under strong pressure from European airlines, several of whom had conducted successful test flights in the supposed danger zone.

youdao

这个部门主管民航事务。

This department is in charge of civil aviation.

youdao