A transistor including an oxide semiconductor layer can have stable electrical characteristics. The compressor section includes an inlet guide vane assembly including an inner shroud, an outer shroud, and an inlet guide vane extending from the inner shroud to the outer shroud. The present invention also provides pharmaceutical compositions and formulations comprising the polymorphic and amorphous forms and methods of treating bacterial infections by administering the pharmaceutical compositions to a subject in need of such treatment. The axial position of the mass element in relation to the milling cutter body is tuned by use of tuning members included in the device for the tuning of the natural frequency of the device. Then, in a step, the reference voltage is generated to the voltage generator according to the trimming code, so that the output voltage is correspondingly generated by the voltage generator.