A semiconductor device includes a plurality of lines disposed on a semiconductor substrate, and remaining line patterns disposed spaced apart from the lines on extensions from the lines. The undulating well bore includes at least one inclining portion drilled through the subterranean zone at an inclination sloping toward an upper boundary of the single layer of subterranean deposits and at least one declining portion drilled through the subterranean zone at a declination sloping toward a lower boundary of the single layer of subterranean deposits. The deflection system provides dynamic stabilization and load-sharing. The source electrode is formed at one end of each channel. The swing member is pivoted on the trigger member and therefore has a pressed position and a room-making position.