Mainly consists of pumps and floating etc, spewing described by the shell and pumping set in the shell of the lumen, motor and motor shell lumen formed a gap between the flow.

• 主要由带浮体的电泵和喷涌器等组成，所述电泵由壳体和设置在壳体内腔的电机组成，电机和壳体内腔之间有同隙形成流道。