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1. The porcelain plug fuse is a crucial componentin the electrical system.
瓷器插头保险丝是电气系统中至关重要的组成部分。
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2. The porcelain plug fuse was designed to protectagainst overheating.
瓷器插头保险丝被设计用来防止过热。
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3. Theporcelain plug fusewas replaced after it failed duringthe power outage.
在停电期间，瓷器插头保险丝失败了，因此被更换了。