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- Measurement of sound pressure level for sound sign. 海船声号器具的声压级测量。
- oscillation of sound pressure 声压振动
- With the increase of the SPL, the nodes of sound pressure move Periodically, and sound radi... 在声源产压级较低时,声辐射压分布几乎处处为零,随着声压级增加,节点处声辐射压幅值增加,颗粒稳定性增强。
- By using double-exposed holographic interferometry, the distribution of sound pressure in the acoustic levitation field is analyzed. 利用二次曝光全息干涉术实现了对单轴式声悬浮声压场的研究。
- The wavelength is obtained by means of observing the variation of sound pressure (amplitude or phase) on the receiver surface with the distance between the receiver and emitter. 该实验是通过调节两换能器之间的距离观察接收换能器上声压(幅度或相位)变化规律获得波长。
- The flow characteristic of the open cavity and the variation of sound pressure level(SPL) caused by a control rod spoiler were investigated by means of numerical simulation and wind tunnel test. 本文利用数值模拟和风洞实验相结合的方法,研究了开式流动腔体的流动机理及设置圆柱控制杆后,腔体内声压级(SPL)的变化。
- When did the first measurement of the speed of sound take? 第一次测量声速是在什么时候?
- automatic regulation of sound pressure level 声压级自动调节
- thresholds of sound pressure level 声压级阈, 听力零级
- Every paragraph is a distillation of sound judgment. 每段话都是正确判断的结晶。
- Airliners in service at present cannot fly faster than the speed of sound. 目前供使用的客运机飞行速度不能超过音速。
- Our teacher has mutation of sounds suddenly. 我们的老师突然语音发生了变化。
- Characterized by high volume and intensity. Used of sound. 大声的以高音量和强烈为特征的。用于声音
- Mach two equals twice the speed of sound. 二马赫相当于声速的二倍。
- His distinction of sound is excellent. 他辨别声音的能力很强。
- Wood is a poor conductor of sound. 木头是声音的不良导体。
- Expressing Sound Pressure with Strength and Weakness of Sound 声音的强弱宜用声压直接表示
- A device for measuring the speed of sound in water. 速度计,速度表用于测量声音在水中的速度的仪器
- At the risk of sounding ungrateful, I must refuse your offer. 我甘受拂逆盛情之嫌,也必须谢绝你的提议。
- Yu Daren, Bao Wen, Xu jiyu.The effect of pressure oscillation on torsional oscillation of turboset shaft system[J].Power Engineering,1995, 15(6): 1-5. [15]于达仁;鲍文;徐基豫.;快关调节阀中蒸汽压力脉动对轴系扭矩的影响[J]