In a method for forming ferroelectric thin films of vinylidene fluoride oligomer or vinylidene fluoride co-oligomer, oligomer material is evaporated in vacuum chamber and deposited as a thin film on a substrate which is cooled to a temperature in a range determined by process parameters and physical properties of the deposited VDF oligomer or co-oligomer thin film. 01 part by weight per part by weight of a protein in the composition; and a composition for cell-free protein synthesis superior in storage stability in a frozen state, more particularly a freezable or frozen composition for cell-free protein synthesis, containing a cell extract for cell-free protein synthesis and polyhydric alcohol. The delay of the delay line is reduced in response to the first control signal. The notch-filter circuit allows only signals in a predetermined frequency to be transmitted from the first transistor amplifier module to the second transistor amplifier module and amplified. In step S5, a target capacitance is obtained based on the capacity current CIC and a charge frequency frat obtained in step S4. The first judgment unit is configured to judge whether the imaging command is connected to one content image that is being displayed by the image display.