查询词典 noise-power-ratio

For example, DPCA has desolately studied in their carbody model for noise reducing effect; outer equipment and other connective parts are considered enough for noise reduction, for example, taking test on model of rear-view glass which may produce noise.

例如车身造型充分考虑降低扰流噪声，在外部设备和连接部分都精心研究，比如后视镜这个可能产生噪音的部件，就在模型上进行扰流测试。

Based on the simple global noise source, take the noise which is cared by people into account. Get the sound pressure level after processing the noise sources sound pressure. Educe the allowable value of the upper limit, through linking to the sound pressure level which is permitted. Taking the value into the reliability modals established before, found the diplex integral mathematics modals that is restricted.

考虑约束因素的影响，引入人们所关心的噪声，以结构简单的球形声源为基础，在对声源声压做了相对处理后，得到其声压级，结合许用声压级指标，求得许用频率上限值，将该值代入已建立的防共振模糊可靠度模型，建立有约束防共振模糊可靠度计算的双重积分数学模型。

Low noise amplifier can amplify own noise, but its resistance and electric capacity noise should be low.

低噪声放大器除了放大自身噪声外，还需要电阻、电容的噪声也很低。

The noise performance of the electrometer is analyzed in detail and conclude that the input current noise is main factor on noise of the electrometer.

对静电计放大器的噪声性能做了细致的分析，确定了输入电流噪声为放大器噪声的决定因素。

Based on thermal conduction theory, a thermal model is built up to get the effective thermal content and the effective thermal conductivity to be 1.0×10^(-3) W/K and 8.1 μJ/K, respectively, and the temperature-fluctuation noise is nearly 1.73×10^(-10)W/Hz(superscript 1/2). According to the device operating principle and energy equipartition theory of thermodynamics, the mechanical-thermal noise is 9.96×10^(-9) W/Hz(superscript 1/2), and the background noise is nearly 3.22×10^(-11)W/Hz(superscript 1/2), so that the normalized detectivity is deduced to be 9.03×10^6 cmHz(superscript 1/2)/W.

从理论上建立了器件的基本热模型，推导得到器件的等效热熔和等效热导分别为8.1μJ/K和1.0×10^(-3)W/K，温度噪声约为1.73×10^(-10)W/Hz(上标 1/2)；通过器件的工作机理和能量均分原理，推导得到热机械噪声的等效噪声功率约为9.96×10^(-9)W/Hz(上标 1/2)，器件的背景噪声约为3.22×10^(-11)W/Hz(上标 1/2)，从而得出器件的归一化探测率约为9.03×106cm。

So it is suitable for higher receiving point. T-shaped structure has a good reducing noise effect at the area lower than 2m behind the noise barrier. The insertion loss is between 1.7 and 2.4dB higher than that of the erective noise barrier.

在屏障后50m距离、高度20m的插入损失仍能达到3.4dB，比直立形高出3.2dB，适合用于防治高度较高的噪声敏感点噪声。

A technology of VAD, in practice, plays an essential role in noise spectrum estimator. The VAD scheme is frequently employed into noise spectrum estimator as an indicator of updating noise spectrum.

事实上，语音侦测技术使也在噪音估测器中扮演非常重要的角色；一般都采用语音侦测系统的技术作为判断何时追踪噪音频谱变动的指示器。

Noise measurement and analysis instruments: sound level meter, noise dosimeter, noise statistics analyzer, personal sound exposure meter, octave and 1 / 3 octave filter

噪声测量分析仪器：声级计、噪声剂量计、噪声统计分析仪、个人声暴露计、倍频程和1/3倍频程滤波器； 42。

Morphological and flourescent changes were assessed using confocal microscopy in whole-mount organ of Corti preparations. Results (1) After the animals were exposed to broadband noise at 122 dB SPL in 4 h/day for 2 days, both apoptosis and necrosis appeared in OHCs. The single strand DNA in apoptotic OHCs were observed both in guinea pigs and mice.(2) In normal OHCs, EndoG was distributed outside of nuclei. EndoG translocated from outside to inside of the nuclei in both apoptotic and necrotic OHCs following noise exposure.(3) The MNNG cochlear perfusion and noise exposure both caused the transloctation of AIF from the mitochondria to the nuclei. The translocation of AIF took place in both apoptotic and necrotic OHCs.

结果 (1)暴露于120 dB SPL的白噪声环境中每天4小时，连续2天后引起豚鼠和小鼠耳蜗外毛细胞凋亡时，其细胞核内产生ssDNA，而在正常细胞内没有三ssDNA；（2）在正常情况下，EndoG分布于耳蜗毛细胞的细胞核外，在暴露于上述噪声后发生凋亡和坏死的豚鼠耳蜗外毛细胞中，EndoG从细胞核外转移到细胞核内，细胞核中的EndoG显著增加；（3）豚鼠耳蜗外淋巴灌流烷化剂MNNG后发生耳蜗外毛细胞凋亡和坏死，在凋亡和坏死的耳蜗外毛细胞中，AIF自线粒体转移到细胞核，其变化与噪声损伤引起耳蜗外毛细胞凋亡和坏死时一致。

The Gauss noise, the pulse noise, and mixture of two is the typical noise model .

由高斯噪声、脉冲噪声以及二者的叠加而成的混合噪声是数字图像中存在的典型噪声模型。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。