dabber

常见例句

Dabber: A ball-shaped device filled with cotton or rag in the middle and wrapped with leather of fine cloth .
拓包:一个球状物体，中间是棉花或破布，外面用皮或细绒布包着。
The ZSJL Water Motor Alarm consists of a turbine shell, a vane wheel, a transmission shaft, a dabber, a rocker arm, a clapper, an alarm seat and a support shaft etc.
ZSJL型穿墙水力警铃是由轮机壳体、叶轮、传动轴、芯轴、转臂、铃锤、警铃座、支撑轴等组成。