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- 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。
- Radiated sound pressure of an infinite periodic ring-stiffened cylindrical shell in fluid field was studied by both theoretical and experimental method. 对流场中一无限长周期环肋圆柱壳受激振动的辐射声压进行了理论和实验研究。
- Ultra-low distortion at extreme sound pressure levels. 超低失真的极端声压级。
- Moreover, the sound pressure and velocity on the virtual boundaries can be get simultaneity by using this method, which cannot be done by conventional boundary element method. 同时采用文中的方法还可以同时得到声场中非物面边界上质点的振动速度和压力,这是常规边界元法无法做到的。
- INTRACRANIAL SOUND PRESSURE LEVELS DURING IMPULSSE NOISE EXPOSURE Saljo A. 在噪音刺激下颅内声音压力水平。
- The ways to stop bleeding include direct pressure method and indirect pressure method. 止血方法可分为直接压法及间接压法。
- Thermal pressure method is part of resin inlaying, for which thermosetting resin is widely used. 热压镶嵌法属于树脂镶嵌法,其中,采用热固性树脂又是非常普遍的。
- Tension method also can distinguish permeability of different concrete, but it has discreteness compared with water pressure method. 通过研究张力法下水在混凝土中的渗透发现:水在张力法下更容易渗透,张力法下的渗透系数比水压法下大一个数量级。
- 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。
- Breakthrough pressure method was presented in order to accurately determine the plugging position of water shutoff agent in oil reservoir. 为了能更准确地预测堵剂在油藏中的封堵位置,提出了堵剂突破压力法。
- 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 dynamic surface tension of aqueous solution of alkyl glucoside(APG) C_(8/10)G_(1.31) and C_(12/14)G_(1.43) was studied by using maximum bubble pressure method. 采用最大泡压法研究了表面活性剂烷基聚葡糖苷(APG或CiGj)C8/10G1.;31和C12/14G1
- 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。
- Based on static pressurizing method,the leakage and degassing rate of a dewar of 210 L was measured. 运用静态升压法对国内某厂家生产的210L杜瓦的漏放气速率进行测量;绘制了夹层压力随时间的变化曲线;测得总漏放气速率为2.;0×10-8Pa
- Presents the balance valve make-up water pressurization method used in substation reformation. 摘要介绍了在换热站改造中采用的平衡阀补水定压方式。
- 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。