当可燃混合气压缩时，气环密封可燃混合气；当可燃混合气燃烧时气环可阻止所产生的压力不外溢。
The compression rings seal in the air-fuel mixture as it is compressed and also the combustion pressures as the mixture Burns.
漂是大锅里漂着小锅盖，四周透气但开水不外溢，而杉木的锅盖特有的木香也为面汤增加了一种味道。
Drift is a big pot floating in a small pot, surrounded by ventilation but water does not spill, and the fir of the lid of the unique wood for the soup also increased the taste of a soup.
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