A data alignment circuit of a semiconductor memory apparatus for receiving and aligning parallel data group includes a first control unit, a second control unit, a first alignment unit and a second alignment unit. To maintain a relatively constant and controlled nozzle rotation, one or more chamfered spokes are included on the turbine of the sprinkler system. Typically, the representational editing system displays an image in place of the embedded content. The semiconductor device further includes a first material having a first portion and a second portion, the first portion of the first material filling the first portion of the at least one opening. The insulative housing has a pre-pressing surface at one side of the receiving slot to pre-press the guiding portion and prevent the switch terminal from bouncing upwardly to resist a front side of the limiting block in an assembly process of the switch terminal. The uneven section has recessed portions and satisfies the following inequality:hd\u22671where h is the depth of each recessed portion and d is the distance between the protruding portions.