| 摘要 |
An acoustical material has a wide range of applications, including magnetic recorders such as tape recorders, MD recorders and digital audio tape recorders (DAT), sophisticated video devices such as video recorders and video cameras, acoustical tape for piping in buildings, lining for home electric appliances and automobiles, and housing material. The acoustical material comprises a net, such as plastic net, overlaid with acoustical polymer film that contains an active component for increasing dipole moment.
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