本部长英语怎么说就是日企里面的本部长

General Manager, Chief XXX Officer

会长 Chairman
副会长 Vice Chairman
社长 President
副社长 Executive Vice President
专务 Senior Managing Director
常务 Managing Director
副常务 Director
室长 General Manager
部长 General Manager
次长 Senior Manager
课长 Manager
代理 Assistant Manager
主任 Junior / Commercial Officer
社员 Commercial Officer
系长 Technical manager
技工 Worker

本部长：
General Manager,
Chief XXX Officer