sound power

Lee can sound almost evangelical when he talks about the liberating power of technology.

当李开复谈起技术释放的能量时他的声音几近热切.

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Study on Vibration Measurement Method of Sound Power Level Emitted by Large and Medium Electric Machines

大中型电机声功率的振动测量法研究

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Measuring And analysing for the sound power level of Roving Frame

粗纱机噪声声功率级的测定与分析

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the progress in the measurement of sound power level of noise source

噪声源声功率级测量的进展

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determination of sound power level for noise emitted by woodworking machinery

GB/T3770-1983木工机床噪声声功率级的测定

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the relationship between sound power level and sound pressure level radiated by the fan in a suck pipe

吸气管道中风机辐射的声功率级与声压级的关系

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measurement and calculation of sound pressure level and sound power level.

声压级及声功率级的测量和计算。

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a study on the scanning path error for determing sound power level using sound intensity scanning

基于扫描声强法的声功率测量扫描路径误差研究

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the sound power level calculation of similar fans

相似风机声功率级的估算

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PC power has reached a level close to that needed for procession television and sound data streams in real time, multimedia was born.

电脑的能力达到实时处理电视和声音数据流的水平，这时多媒体就诞生了。

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There are specific Powered Mechanical Equipment ( PME) with sound power lower than those specified in Technical Memorandum on Noise from Construction other than Percussive Piling ( TM1).

特定的机动设备，其声功率较《管制建筑工程噪音（撞击式打桩除外）技术备忘录》指明的其他设备为低。

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measurement on the sound power level for mechanical noise

机器噪声声功率级的简测方法的研究

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determination of sound power level for noise emitted by displacement compressors& engineering method

GB/T4980-1985容积式压缩机噪声声功率级的测定&工程法

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Sound Power Measurement in a Narrow Room Chat Room Next Room

狭小空间条件下的声功率测量

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Under the high-frequency, high power sound radiation conditions, the mechanical strength of thin disk get insufficient. Then the thick disk is a good choice because it possesses advantages of small transverse dimension and high frequency.

在高频、大功率声辐射条件下，薄盘的机械强度显得不足，这时厚圆盘是个不错的选择，因为它横向尺寸不大，频率又高。

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Experimental Analysis of Ultrasonic Testing for Level of Material in Tubular Ball Mill of Fossil-fuel Power Plant; Research of Ball Mill ′ s Material Level Measurement System on Sound-electronic Measurement

火电厂钢球磨煤机料位超声检测的实验研究基于球磨机电声功率谱料位检测系统的研究

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The dogs of experiment group undergoing simulative partial costectomy and costophrenic angle closure were continuously exposed to HIFU with 0.8 MHz waves, 120 mm focal distance, fixed-point exposure, and 220 W sound power for 90 seconds. The liver damage area were measured and observed pathologically.

以0.8MHz、焦距120mm、定点点打、声功率220W连续照射两组实验犬肝右叶90s，对肝毁损灶进行面积和体积测定及病理学检查。

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Calculation Analysis of Cutting Sound Power in Small-Sized Disk Saw Machine

小型圆盘锯机锯切声功率的计算分析

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According to the method of angular power spectrum for average sound field in shallow water, the transformation relation between arbitrary angle dependence of bottom scattering and the range dependence of long-range reverberation in shallow water homogeneous layer is established.

利用浅海平均声场角度谱分析法，在海底散射的任意角度关系和浅海均匀层远程混响的距离关系之间建立了变换关系。

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A plate is involved to show the mode shapes of the acoustic power modes, sound power computation using the power modes and the modal truncation of the power modes.

文中以板结构声辐射为例对声功率模态的振型、声功率模态下的声功率计算和模态截断进行了计算分析并对结构声辐射的声功率模态控制进行了讨论。

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sound power level measurement for pipa-one of chinese traditional instruments

中国传统民族乐器琵琶的声功率测试

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Some experimental formulae about jet sound power and jet noise pressure which are contributed by the Noise Control Laboratory of The Pennsylvania State University are recommended.

接着推荐美国宾州大学噪声控制研究室关于喷流声功率与声压级的经验公式。

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Sound Power Level Measurement of Ruan, a Chinese Traditional Plucked Stringed Instrument;

阮是一种具有两千多年历史的中国弹拨类乐器，起源于秦汉。

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In her experience, people in positions of power or people in finance or engineering do not tend to like the sound of the word.

据她的经验来看，有权力者或在金融、工程方面工作的人不想听到这个词。

四级真题- 2016年 12月 3卷 信息匹配

Since 2004, some basic data have been gained from the systematically measurement of a number of important national instrument' sound power level in reverberation room of South China University of Technology.

华南理工大学自2004年开始在混响室内对若干重要的民族乐器的声功率级进行了系统的测试，得到了民族乐器的部分基础声学数据。

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The sound power level of oil pan was estimated by the method of vibration velocity.

通过振动速度法，估算了油底壳辐射的声功率级。

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method for semi-anechoic room used for measurement of sound power level of reference sound sources

标准声源声功率级的半消声室检测法

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The acoustic radiation resistance matrix is combined with the velocity vector on a vibration surface to predict the total sound power radiated from the structure.

利用声辐射阻力矩阵和振动面上的速度矢量预报了结构声辐射的总功率。

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Instead she prays for more power and a sound mind.

她只会祈求有更多的力量和更健全的心灵.

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First, the sound power and prestige.

第一, 音响威风.

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