短语词组短语underwing coverts 下覆羽underwing moth 后翅蛾white underwing 白裳夜蛾underwing pod 翼下吊舱underwing carrier 翼下吊架;机翼下吊架underwing pylon 翼下外挂梁underwing boom 翼下喷杆underwing launcher 翼下发射架underwing rack 翼下发射导轨 返回 underwing