protective spark gap的用法和樣例：
例句
- Interestingly, these T-R cavities employ old-fashioned spark gaps, complete with ozone smells and crackling sound tones.
有趣的是這些收發(fā)開(kāi)關(guān)里頭使用的舊式火花隙會(huì )生成臭氧并發(fā)出輕微的爆裂聲。 - The installation of an air gap and drain line are recommended.
建議安裝氣隙和排放管道。 - This would create an air gap to eliminate any possible backflow.
這將產(chǎn)生一個(gè)氣隙以消除任何可能的回流。
