Data is converted into a minimized data representation using a suffix tree by sorting data streams according to symbolic representations for building table boundary formation patterns. The megasonic tank may include a barrier that is configured to protect the fragile component. The driving unit actuates opening and closing at different time to enable the floating level unit to output a voltage floating level thereby to drive a ceramic transformer to control the medium voltage system through a low voltage level. The link arm has a first edge and a second edge opposite the first edge. Preferably, the wafer stacks are separated from one another by separating pieces after slicing, and at the same time are laterally supported.