中文:封头开孔
英文翻译:【化】head openingopening in head
中文:夹套封头英文翻译:【化】jacket head...
中文:壳体封头英文翻译:【化】shell covershell head...
中文:半球形封头英文翻译:【化】hemisphericalheadsemispherical...
中文:凹形封头英文翻译:【化】reversed dished head...
中文:封头板英文翻译:【化】head plate...