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- standard sound pressure 标准声压
- Measurement of sound pressure level for sound sign. 海船声号器具的声压级测量。
- The audible sound pressure range is from 0 dB to 120 dB. 听觉范围为0分贝到120分贝。
- Ultra-low distortion at extreme sound pressure levels. 超低失真的极端声压级。
- INTRACRANIAL SOUND PRESSURE LEVELS DURING IMPULSSE NOISE EXPOSURE Saljo A. 在噪音刺激下颅内声音压力水平。
- Most standard sound effects can be obtained on tape from film-studio sound libraries. Others may have to be created. 大多数标准的音响效果可以从制片厂音响资料库借来的磁带上转录。少数音响效果也许不得不自己制作。
- There is a remarkably wide range of frequencies and sound pressure levels over which the human ear can detect. 人类耳朵对声音频率和声压级的感应范围很广。
- 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。
- Usually, the problem is how to reduce the sound pressure level, either at source or on the transmission path. 通常噪声问题的解决办法就是在其声源处或是在其传播途中降低其声压水平。
- The SPL(Sound Pressure Lever) of flow-induced tones limits the required flow speed of aero-acoustic experiment. 为了在气流当中进行噪声测量,传声器上必须加装适当形式的鼻锥以降低传感器自噪声。
- A special ALC circuit handles very high sound pressure levels but without distortion. 采用特别ALC电路不用担心音量过大而失真.
- Each professor was chosen based upon his or her exposure to various sound pressure levels (SPL). 本试验利用音波的此项特性，对于砂土层滑动所产生之声音进行量测。
- For maximum sound pressure levels large sound reinforcement systems frequently use a separate compressor on each output of the electronic crossover(s). 对于最大的声压电平，巨大的声音增强系统，通常在每一个电子分频器的输出后面拉一个独立的压限器。
- Sound Pressure Level (SPL) Sound pressure level is a measurement of the pressure fluctuations of a sound wave as it propagates through the air. 声压级别声压级别是表示在空气中传播的声波的起伏压。
- Analysis shows that the mixed gas intrudes into the hotproduction gas and the explosion inside increases the sound pressure of theemission. 初步分析表明，当气流速度达到可以使未燃混合气突入火焰面内使火焰发生微小爆炸，引致声发射在宏观上突然增加。
- While physical hearing protection can reduce sound pressure levels， they do not adequately prevent NIHL in very noisy environments. 对听力的物理防护可以降低声压水平，但若噪声过强，这种物理防护并不能完全保证听力不受损害。
- Objective To study the change and significance of GFAP in thebrain of the mice exposed to infrasound of different sound pressure level . 目的研究不同声压级次声作用小鼠后脑中胶质纤维酸性蛋白(GFAP)的改变和意义。
- 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。
- Conclusion The extent of GFAP change is closely related to the action times under infrasound of same sound pressure level. 结论马、皮质和下丘脑等区域对次声敏感，次声的作用效应与声压级和作用时间有关；
- There is a standard form of oath used in lawcourts. 法庭中使用的誓词有固定的格式。
