The outer plate of the instrument must be grounded properly, for safety of operation.

仪器外壳必须有效接地，以保证使用安全。

youdao

Objective To discuss the method and safety of operation in treatment of thoracic spinal stenosis.

目的探讨胸椎管狭窄症的手术方法及手术安全性。

youdao

Conclusions: the safety of operation for living-related kidney donors is high and the donors can recover well.

结论：亲属活体供肾者手术的安全系数较高，术后康复理想。

youdao

Using the supplied external microphone, drivers of classic vehicles can now enjoy the safety and convenience of hands-free phone operation.

ENGADGET: RetroSound's Bluetooth-enabled in-dash radio for classic cars now up for grabs

The agency would start regulating space vehicles to ensure crew and passenger safety only if the operation of those vehicles resulted in death, serious injury or a dangerous close call.

MSN: Private-spaceflight bill signed into law

While modern technology and regulations have made sweeping changes to the operation and safety of ships since the Titanic, as told by Wilson, the fundamental cause of disaster is the human element.

FORBES: 100 Years Since The Titanic And A Problem Persists