... protection potential range 保护电位范围 protection power gap 保护电力间隙 protection relay 保护继电器 ...
权威例句
1.
The ultra-thin and lightweight design of the juice pack also complements the smartphone's zero-gap unibody design, delivering full protection and power in a sleek profile.
ENGADGET: Mophie Juice Pack for the HTC One now available Mobile