Bell'sbelln.钟；铃；门铃；钟声；钟状物vt.敲钟；使象钟状地张开vi.使呈钟状；张开bell-bottomed pants喇叭裤Belling Olympic Games北京奥运会bell-type manometer钟式压力计,浮钟式压力计Belling rs hypothesis贝林氏假论Belling saccharimener贝林糖量计bell and spigot joint承插接合,套接,承插接头,承插式接头Bell-Lapadula model贝尔－拉帕杜拉模型bell less top charger无钟装料机bell-mouth overflow钟形口溢流bellwether securities龙头证券