| http://www.w3.org/ns/prov#value | - Applicableorganic solvents are selected from aromatic hydrocarbons such as benzene, toulene, and members of the ketone group.FIG. 4 shows frequency charcteristics and a harmonic distortion curve from 20 Hz to 20,000 Hz, for a speaker equipped with a single flat diaphragm 1a, acetilated by the method as described in the embodiment.
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