| 摘要 |
1,147,103. Reducing noise of gas burners. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 31 Jan., 1968 [2 Feb., 1967], No. 5131/67. Heading F4T. The noise emission of a gas burner is reduced by directing a high frequency acoustic wave transverse to the flow axis of the gas jet. The wave may be produced by a barium titanate crystal transducer driven by an electrical oscillator. |
