查询词典 acoustic

National acoustic laboratories, 126 greville street, nsw 2067, australia objective to obtain the slope and srt of the p-i function for mandarin short sentences in 4-talker babble noise, and evaluate/adjust the homogeneity all sentences individually.

目的 获得嘈杂语噪声背景下汉语短句识别率-信噪比（performance-intensity， p-i）函数的斜率和50%的得分所对应的信噪比(记为snr50)，并对所有短句的同质性进行评估和调整。

National Acoustic Laboratories, 126 Greville Street, NSW 2067, Australia Objective To obtain the slope and SRT of the P-I function for Mandarin short sentences in 4-talker babble noise, and uate/adjust the homogeneity all sentences individually.

目的 获得嘈杂语噪声背景下汉语短句识别率-信噪比（Performance-Intensity， P-I）函数的斜率和50%的得分所对应的信噪比(记为SNR50)，并对所有短句的同质性进行评估和调整。

Based on the characters of long rang underwater acoustic channels and MFSK modulation, a new Frequency Group Coding method is proposed in this paper.

本文针对远程水下信道和MFSK调制的特点，提出了一种新的频率分组编码方法。

He is not only a highly-praised graduate student, but also a excellent football player and acoustic guitarist.

他不仅是为颇受赞扬的研究生，同时他还是一名优秀的足球运动员和原声吉他手。

Harking back to the early pioneers of acoustic New Age, McLaughlin has appeared on several Narada Albums both his own and included with other guitar pickers.

听一下"新时代"早期的先锋作品，Mclaughlin出现在几张Narada唱片里。一道的还有几个其他的吉他演奏者

Based on the relationship between the harmonics, a method that uses nonlinear acoustic harmonic amplitude ratio to distinguish microcracks in cement-based materials. Experimental tests were performed by two groups of mortar samples.

利用非线性波动理论中二阶谐波幅值与基波幅值的关系，探讨了通过测试谐波比关系的变化，获得材料非线性特征改变，进而判断材料损伤的方法，并进行了试验研究。

Heat insulation for high temperature pipelines and heat insrlation, fire proof and acoustic absorption for high building.

热力管道绝热保温、高层建筑隔热保温、吸音、防火

In this thesis, the AlN thin films were deposited on SiO2/Si and GaN/Sapphire substrates respectively for layered structure SAW devices by Helicon sputtering system. Laser ultrasound system was used to measure the acoustic wave velocity of AlN/SiO2/Si layered structure. Frequency response and insertion loss were measured by an HP8510C vector network analyzer to analysis insertion loss, sidelobe and quality factor. The results showed the possibility of incorporating thin films SAW devices with other semiconductor devices.

本研究使用回旋溅镀系统分别在SiO2/Si、GaN/Sapphire两种基板上沉积AlN并制作层状表面声波元件，并利用雷射超音波系统量测AlN/SiO2/Si结构之表面波速及机电耦合系数，再利用网路分析仪量测其频率响应，分析其插入耗损、 sidelobe、品质因子Q，以比较不同基材所制作之层状表面声波元件之特性，此研究成果初步验证AlN层状表面声波元件与半导体元件整合之可行性。

In the same way failure area is not single andis more complex with decrease of scale of specimens. And failure shape ismore close to quasi-brittle failure. It varies with homogeneousness that thescale of specimens at which failure shape changes.(3) The failure shape of homogeneous specimens with crack is controlledby crack. But that of heterogeneous specimens with crack is controlled bycrack and heterogeneousness.(4) Acoustic emission doesnt appear until homogeneous specimens fail.

但对于不同均质度，试件破坏形态发生变化的尺度也不同；(3)对于均质度较高的含裂纹试件，试件的破坏形态主要受裂纹控制，而对于均质度较差的含裂纹试件，试件的破坏形态由试件材料的非均匀性和裂纹共同控制；(4)均质度较高的试件，破坏前，试件内不出现声发射，破坏瞬间，声发射在某些部位同时出现，且随尺度增大，试件声发射能量增大，声发射区趋于集中。

According to the principle of near-field acoustic holography, the system of data acquisition and analysis needed in holographic experiments have been constructed.

根据近场声全息的原理，建立了全息实验所需要的采集、分析系统。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。