共 50 条
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- [28] NOISE-LEVEL REDUCTION OF DEPRESSED FREEWAYS JOURNAL OF THE SMPTE-SOCIETY OF MOTION PICTURE AND TELEVISION ENGINEERS, 1960, 69 (02): : 116 - 118
- [29] MEASUREMENT OF AVERAGE NOISE-LEVEL FOR IMPULSIVE NOISE SOURCES JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 1976, 60 : S51 - S51