补偿式发电机电流差动保护
compensated generator differential protection
风力发电机发电
wind energy power generator
半浸式螺旋桨
surface piercing propeller
partially submerged propeller
多探头螺旋式电脑断层扫描仪
Multi-detect or Helical Computed Tomography
发电机机架固定螺栓
generator frame mounting bolt