发动机齿轮箱 meaning in English

engine gearbox

Rolling element bearings - aircraft engine , engine gearbox and accessory applications - eddy current inspection
飞行器发动机发动机齿轮箱及辅助设备的滚动轴承.涡流检验
Rolling element bearings - aircraft engine , engine gearbox and accessory applications - surface temper etch
飞行器发动机发动机齿轮箱和辅助设备的滚动轴承.表面回火侵蚀剂
Rolling element bearings - aircraft engine , engine gearbox and accessory applications - surface visual inspection
飞行器发动机发动机齿轮箱及辅助设备的滚动轴承.表面目视检验