bellows

波纹管；风箱；皮老虎英释中释nA bellows is or bellows are a device used for blowing air into a fire in order to make it burn more fiercely

1 metal bellows,金属波纹管；金属伸缩软管

2 bellows expansion joint,[化]波形膨胀接头；波纹管膨胀接头

3 bellows seal,波形密封；膜盒密封；波纹管式密封