A screw component including lens holder and lens barrel component engaged with each other, and protruding portions respectively provided on each of both flanks of screw thread of lens holder. A differential transceiver circuit supports a bidirectional mode and is also signal-compatible with JEDEC SSTL 2. Then, the impurities such as moisture, which exist not only in a source electrode layer, in a drain electrode layer, in a gate insulating layer, and in the oxide semiconductor layer but also at interfaces between the oxide semiconductor film and upper and lower films which are in contact with the oxide semiconductor layer, are reduced. The feeder rotor feeds the plants to the threshing rotor nearest the feeder rotor. The method of this embodiment comprises introducing the ternary gas mixture of the present invention into a plasma torch apparatus, initiating a plasma in the plasma torch apparatus, and sustaining the plasma with a high voltage between a cathode and an anode. The module assembly includes a single high-intensity power light emitting diode that has a luminous efficiency of at least about 1 lumen per watt when the light emitting diode is operated and is preferably operated at a forward current of at least 100 milliamps.