A process is disclosed for sectioning by etching of monolayers and multilayers using an RIE technique with fluorine-based chemistry. The separating pipe has a spiral-shaped guiding member therein. The second transfer rate is assigned to the second user terminal if it is equal to or smaller than the increased remaining link capacity. The present invention also provides precision low-loss power division over very wide-bandwidth. The threads and compression member draw the fragments together and leaves the head entirely clear of the bone surface.