词汇	松垂
释义	松垂医sag
随便看	bellowss bellows seal bellows seal adaptor bellows seal bonnet bellows sealed gate valve bellows-sealedisolating valve bellows -sealed isolating valve bellows sealed valve bellows-sealed valve bellows seal gate bellows seal glob Bellows Shake bellows sheeting bellows shutter bellows sound bellows spring bellows strain gauge bellows stretcher bellows support bellows temperature controller bellows transducer Bellows Tremble bellowstype bellows type bellows-type