用机器操作

machine-operate

手工操作

manual operation

半机械化操作

semi-mechanized operation

操作人员

operator

操作规程

operating regulations

操作规范

standard operation procedure

操作技术

operating techniques

操作过程

operating process

操作表演

operation demonstration

操作简便

be easy to operate

开始操作

commence operation

在家帮助母亲操作

help one's mother around the house