bellowvi.吼叫vt.大声喝道n.吼叫声;风箱,鼓风机,鼓风匣子
bellows expansion joint波纹管膨胀接头
bellows type air spring囊式空气弹簧
bellows mechanical seal波纹管机械密封
bellows pressure sensor膜盒式压力传感器
bellows-type regulator波纹管式调节器
bellows-type lens hood皮腔式镜夹(遮光)罩
bellows-type manometer波纹管式压力计,皱纹管式压力计
bellows-type steam trap波纹管式阻汽排水器