protective device

常见例句

This ensures that the only protective device to trip is the one nearest to the fault.
还可以确保惟一跳闸的保护装置就是离故障点最近的装置。
Now, koalas have another protective device, apart from the one they use on you from a great height.
对了，除了从据高点对着你发射尿液外，树熊还有另一防卫招数。
The Buchholz Relay is used as a protective device sensitive to the effects of dielectric failure inside the equipment.
作为安全装置，布赫继电器对于设备内的电介质故障是非常敏感的。

Material from the RQ36 asteroid will be sent back to Earth in a special protective device.

These stickers, two of which are bundled with the device, lie sealed in a protective envelope -- presumably, to keep them free from outside interference.
ENGADGET: LG Optimus Vu review: a 5-inch, pen-enabled phone to take on the Galaxy Note
As you can tell, the device itself is encased in a ShockMount layer of protective armor, and we have to stress the "armor" aspect.
ENGADGET: Ridgid Jobsite iPod Radio takes a beating, survives long enough to go on sale (video)