单词	sylphon
释义	sylphon noun syl·​phon ˈsilˌfän plural sylphons : a thin-walled tubular bellows used in temperature and pressure regulators, bellows seals, and expansion joints In between, a maze of valves, venturis (short tubes with constricted throats), and sylphons (pleated metal bellows) interacted with one another, maintaining conditions inside the airplane as outside pressure varied. Nick D'Alto, Air & Space Smithsonian, September 2000 —formerly a U.S. registered trademark
随便看	boustrophedons bout boutade boutades boutefeu boutell Bouteloua boutelouae boutelouas boutique boutiques boutiquey bouto bouton pearl boutonniere boutonnieres boutons boutos boutre Boutros-Ghali bouts bouts-rimés bouvardia bouvardias Bouveault-Blanc reduction

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