噪

It can be used in the following sites to eliminate sound and to stop noise: pipeline silencers, hend mufflers, plenum chambers, purification workshops, food-producing workshops, Pharmaceutical Factories, manufacturing shops of precise instrument, laboratories, wards and operating rooms, canteens, boats and passenger compartments, cabins, air-conditioning and ventilation equipment.

用于管道消声器、消声弯头、静压箱、净化厂房、食品生产车间、制药厂、精密仪器制造车间，实验室、病房手术室、餐厅食堂、船舶机舱、客舱、空调通风设备起到消声障噪作用。

In the intersatellite coherent optical communication, the vibration of a satellite will lead to a pointing error of transmitting and receiving antennas, which will decrease the signal-to-noise ratio and increase the bit error rate. In this paper, the Rayleigh distribution is taken as the pointing error model caused by satellite vibration, and PSK homodyne communication scheme is used as an example to analyze the influence of the satellite vibration on the system instantaneous BER and average BER. The simulation calculation result of BER is given.

针对星间相干激光通信中卫星平台的振动造成发射天线和接收天线的瞄准角误差，使系统信号信噪比下降，误码率增加，该文以瑞利分布作为振动造成的瞄准角误差模型，结合高斯本振光和艾里信号光外差检测模型，以PSK零差通信体制为例分析卫星振动对系统的瞬时误码率和平均误码率的影响，给出误码率仿真计算结果。

The huari board, felt and pipe products made of this material have been used in heat preservation, thermal insulation and sound absorption in construction, chemical industry, electronic industry, electric power, metallurgy, energy industry and transportation, presenting very good result.

用该材料制成的板、毡、管已大量用于建筑、化工、电子、电力、冶金、能源、交通等领域的保温隔热、吸声降噪，效果十分显著。

The vibration absorbers with hysteretic restoring forces are widely used in the engineering to reduce the vibration of structure.

迟滞阻尼减振器以其卓越的性能在工程的减振、降噪中得到了广泛的应用。

A phase-locked amplifier is used to improve the signal-to-noise ratio of photoelectricity signal, and a computer is utilized to incept the sampling sig...

用锁相放大器来提高光电信号的信噪比，信号被快速采样后由接口电路输入计算机，自动给出所测单模光纤的模场半径。

The Pick-pick Signal Noise Ratio PSNR or Mean Square Error MSE does not conform to subjective psychological sensation, while subjective assessment is usually inexactly and has subjectivity.

通常使用的峰—峰信噪比或均方误差与主观感觉并不相符，而主观评价又存在主观性和不确定性，其结果往往因人而异。

Some information such as pitch and harmonic of each speech stream, interaural time difference and interaural intensity difference and etc could be obtained from overlapping speech by the analyzing and modeling of overlapping speech and noisy speech, based on which the interested speech can be reconstructed and overlapping speech can be separated.

通过对混叠语音和含噪语音进行分析建模，对混叠语音分别提取其各自语音流的基音及谐波、双耳时间差ITD和强度差IID等信息，并以此重构目标语音分量，达到分离混叠语音的目的。

At last,this paper analyzed the influence of the inversive receiver to the chracteristic of the clutter and the ratio of signal power and the noise power ,discussed the effective detection of target signal in correlated clutter,and then put forward a new method naming multi-periods shift accumulation for detecting moving target when not knowing the exact movement parameter.

最后，本文分析了倒置接收对目标回波信噪比及杂波特性的影响，讨论了在相关杂波区对回波信号有效检测的方法。针对如何在弹目相对运动参数未知的条件下对高速运动目标进行积累检测这一问题，提出了一种多周期移位积累的新方法。

It is 34 years ago, qin Guohua and his co-worker people, ever guided the website of many 10 people such as 3tom.com, Wo99.com, irruptive China website 100 strong a list of names posted up are odd, before ascend body whole world 300, from now on all corners of the country of network of renown a confusion of voices, become the person that Anhui Internet does poineering work at that time get military thing, but subsequently Qin Guohua fades gradually.

就在三四年前，秦国华与他的合作者们，曾带领3tom.com、wo99.com等10多个个人网站，冲入中国网站百强榜单，跻身全球前300名之列，从此名噪网络江湖，成为当时安徽互联网创业者的领军人物，但随后秦国华渐渐淡出。

The metalsize-sensitivity of this band and theoretical studies render it possible to re-assi gn it to the coupling of isoindole deformation and aza vibration.

学位论文敏感程度和理论研究证明了重新命名叫噪变形和氮杂环振动的祸合的可能性。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。