He died of a heart attack during a routine operation.

他在一次普通手术中死于心脏病。

Group B: Routine operation in 48 cases as control.

组48例采用常规手术方式作对照。

He died during a routine operation which went wrong.

他因一次例行性手术出错而死亡。

Results: Routine operation above could be finished in cat tooth.

结果：猫牙可进行牙体牙髓实验的常规操作。

Routine operation reflected the idea of production controlled management.

常规化操作体现了生产的受控管理这一理念。