气动扬声器 Pneumatic loudspeaker ; air-powered speaker ; modulated air stream loudspeaker ; pneumatic

电动式扬声器 DSP dynamic speaker ; dynamic loudspeaker ; electrodynamic loudspeaker ; electrodynamic speaker

电动卷扬机 [机] Electric winch ; [机] electric winding machine ; Electrical Hoist ; electric hoister

动圈式扬声器 [电子] moving-coil loudspeaker ; [电子] moving-coil speaker ; coil-moving speaker ; moving coil type loudspeaker

电动扬声器 [电子] dynamic speaker ; dynamic loud speaker ; [电子] electrodynamic loudspeaker ; moving-conductor loudspeaker

手动卷扬机 [机] hand winch ; manual winch ; manual hoist ; hoist

慢动卷扬机 slow-motion hoist ; low speed winch ; motion hoist

卷扬电动机 lifting motor ; winding motor

机动卷扬机 motor driven winch ; powered hoist ; mechanical capstan engine

气动卷扬机 air tugger ; pneumatic hoist