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- 传声器指向性microphone directivity
- 传声器指向性频率响应directional frequency response of microphone
- 传声器指向性频率特性directional frequency characteristic of microphone
- 传声器指向性图案directional pattern of microphone
- 指数index
- 指向性指数directivity index
- 分子连接性指数用于低沸点烷烃Kovats指数的相关性研究Molectuar connectivity index study on correlation of alkanes of the low boiling point Kovats
- 响度指向性指数loudness directivity index
- 指向性directive property
- 最佳指向性指数Optimum direction
- 扬声器指向性指数speaker directivity index
- 相控线阵声波测井辐射器指向性影响因素研究On Influencing Factors of the Directivity of Phased Array Transmitter in Acoustic Log
- 含损伤加筋板结构辐射声功率及指向性变异研究Study on the variations of acoustic radiation power and directivity of a damaged stiffened panel
- 声信号的指向性orientability of a sound signal
- 基于有限元方法求解薄方板弯曲振动辐射声场的指向性Solution to directivity pattern of sound field radiated by a flexural vibration square plate based on FEM
- 它具有随机性、概括性、问题性、辐射性、指向性和创造性。It has the nature of randomness, generality, problem solving, radiativeness, directionality and creativity.
- 超指向性Super directivity
- 指向性图directional pattern
- 阵指向性array directionality
- 强指向性high directivity