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- Measurement of sound pressure level for sound sign. 海船声号器具的声压级测量。
- difference of sound pressure 声压差
- 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。
- Difference of opinion or feeling; disagreement. 异议，反对意见或感觉的不同，想法分歧
- It is a difference of opinion that makes horse race. 赛马之所以(能够)成立，是由于有不同的看法(意见)。
- We had a difference of opinion (ie argued) over who had won. 我们在究竟是谁获胜的问题上发生了争执。
- automatic regulation of sound pressure level 声压级自动调节
- When did the first measurement of the speed of sound take? 第一次测量声速是在什么时候？
- 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。
- In this shipment, there is a difference of 50 tins. 这批货少了50箱。
- 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。
- It is the difference of the elect and the vulgar. 这是上等人与下等人之间的区别。
- Our teacher has mutation of sounds suddenly. 我们的老师突然语音发生了变化。
- Difference of pressure makes a liquid flow through a siphon. 压力差使得液体通过虹吸管。
- 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
- The difference of rank between us is too great. 我们两人的社会地位相差太悬殊了。
