The present invention provides a semiconductor device having an active region bent at right angles, wherein an interval between patterns for the active region and a gate is set larger than an arc radius of a curved portion formed inside the pattern for the bent active region. A rotatable holding assembly is attached to an end of the spindle and extends from a front end of the housing for holding a tool accessory. The fertilizer of the invention and the process for controlling inoganizing speed of ureaaliphatic aldehyde condensation product of the invention make it possible to control the inorganizing speed of the condensation product without changing the particle size or form, that is, to control development of the efficacy of the condensation product used as a fertilizer. A plurality of keys are made of wood and each have a balance rail pin hole formed in a central portion thereof in the front-rear direction. A spring is embedded in the ring at an intersection of each side face with the seal face. Said identification system comprises at least one sensor unit, a control unit and an output unit which are connected to each other.