操作者工作台检视盖
operator platform access cover
旋转工作台的工件检测
Testing Work-piece on Rotary Working Table
操作者操纵台九阀键排控制
operator console nine valve control bank
操作者的击碎防护
operator crush protection
操作者的疏忽致错
careless mistake of operator
操作者地面控制台
operator ground control console