bulbus球bulbn.球茎；电灯泡；球状物bulb type turbine generator set灯泡型机组bulbus venae jugularis inferior颈静脉下球bulbar roots of accessory nerve副神经延髓根bulb turbine hydropower station灯泡贯流式水电站bulbus venae jugularis superior颈静脉上球Bulbus Fritillariae Ussuriensis平贝母Bulbochaete elatior f. pumilan.较高毛鞘藻矮型变型bulb turbine and generator unit灯泡贯流式水轮发电机组bulbar branches rami ad medullam延髓支bulb tubular turbine-generator有限单元法