Drumgon.德拉姆戈
drumn.鼓;鼓状物;鼓声vi.击鼓;连续敲击;引起兴趣vt.灌输;击鼓;逐出
drum separator with counter-rotating magnet反转磁铁筒式磁选机
drum differential-pressure water level indicators汽包差压水位计