查询词典 sound pressure

The range of sound pressure measurements was 0.15–105 Pa. A series of consecutive measurements were made at intervals of 52.5 s. The wavelength of 80 kHz frequency, although not ideal for investigating mesozooplankton, was chosen because we were initially studying patchiness of

健全的压力测量范围为0.15-105宾夕法尼亚州的连续测量了一系列在52.5秒的时间间隔作出80千赫频率的波长，虽然不是理想的调查浮游动物，是因为我们选择了最初的研究斑块

Not only is sound pressure low, but the frequency is very low in pitch.

不仅是声音压力较低，但频率是非常低的音调。

Results and velocity component are obtained by quadratic polynomial based on time mean of relative sound pressure.

基于相对声压的时间平均的二次多项式得到了测定结果和振速分量。

The conventional numerical simulation of a reverberant field as a launch acoustic environment was introduced. Following the reciprocity theorem used in the coupled FE-BE model, the structural response due to reverberant acoustic excitation was substituted by the sound pressure caused by force excitation on the structure, then the output response power spectrum density of the coupled model subjected to reverberant environment was evaluated based on the stochastic analysis principle.

首先介绍了传统的构建混响声场的数值模拟方法；其后利用声振耦合中的互易定理，将混响声场的激励问题转化为结构模型上力激励引起的场点声压响应问题，并采用随机分析原理，用谱分析方法推导了结构在混响声场激励下的响应计算公式；最后建立了航天器典型结构的声振耦合模型，并分别用传统方法和利用互易定理的方法进行了数值模拟。

This pair of walls, together with the tunnel's boundaries form an enclosure for which the classical formulae frorm room acoustics may be used for calculating the reverberant traffic noise sound pressure levels.

这对虚墙与隧道或街道的边界形成一个围闭空间，使得经典室内声压级计算公式可以应用于计算交通噪声混响声压级。

Experimental results validate that our proposed method for calculating the receiving radius can be used to predict some acoustical indexes such as the sound pressure level and the reverberation time in an enclosure.

实验表明，所提出的接收球模型能用来较准确地预测闭空间里的声压级和混响时间等声学参数。

It is revealed that acoustic quality is an important consideration in these buildings, and it may vary considerably with the same objective acoustic indices such as sound pressure level and reverberation time.

分析表明了声品质在这类非声学建筑中的重要性，另外，即使客观指标例如声压级和混响时间相同，声舒适度亦可能完全不同。

The acceleration and sound pressure on the surface of seafloor are obtained.

建立了点声源作用下海底地震波的时域数值计算模型，利用该模型，对二维半无限空间简单海洋模型的低频点声源海底地震波问题进行了数值模拟，得到了海底表面处的加速度和声压值。

The PS R2 Series offers the user a totally integrated loudspeaker solution, in which innovative transducer, waveguide and enclosure designs come together under the control of strategic equalisation from dedicated TD Controllers to ensure extended bandwidth and sound pressure levels, along with a high degree of speaker protection will now be offered with power options from the NXAMP product range.

新PS R2系列提供了一个完整的音箱系统解决方案，它内里设计先进的换能器，波导管和箱体设计，交于全新设计和专用的TD处理器作策略性的均衡控制，以确保频响的伸延和声压的水平，及极高程度的音箱保护。

Fifteen gram pyrotechnic composition with thermite content of 25% can produce the sound pressure level as high as 158.8 dB, and the acoustic frequency is mainly 0~5 kHz, then the acoustic energy decreases with the increasing of thermite content.

当高热剂的含量为25%左右时效果较佳，15 g药剂水下燃烧时的声压级达到了158.8 dB，频率主要分布在5 kHz以下，但当超过25%时声能开始下降。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。