More important is variation in intensity of the first sound.
第一心音的强度变化更为重要。
And their various locating properties under the condition of the effective sound velocity variation are analyzed.
基于声传播的平面波模型，采用向量分析方法导出了十字阵和正四面体阵的测向公式，分析了两者在有效声速变化条件下不同的定位性能；结果表明，对正四面体阵，采用合适的算式，可在方位估计中避开有效声速的影
Testing methods and properties of the laser plasma shock wave is studied in this paper by analyzing the experimental, data simulation and theoretical result in the lit threshold, the mechanism of action between Laser-Supported Detonation Wave and component of plasma and gas with the variation of laser power density Based on the phenomena of laser supported combustion or detonation wave occurs because of the interaction between the high-intensity laser and material, a new method is present for diagnosing the ignition threshold of laser supported detonation wave by measuring the jump of the sound peak pressure of laser-target plasma.
本文对激光等离子体冲击波的测试方法和特性进行了研究，对激光支持爆轰波的点燃阈值、激光支持爆轰波的冲量耦合过程及其激光吸收区内气态粒子和离化粒子的组分进行了实验、理论、数值模拟的分析工作。
From sound multi-reflection between two ultrasonic transducers and the sound attenuation in air, the article researches the variation of signal output of receiver with distance between receiver and emitter in the experiment of sound velocity measured by standing wave method.
根据声波在2个换能器之间多次反射和声波在空气中的衰减，研究了驻波法测量声速实验中接收器输出信号随接收器到发送器间距离的变化。
The paper analyzed variation of temperature, density and velocity of sound in the west pacific based on LEVITUS database using CSIR.
利用样条插值重构方法对LEVITUS数据库中的温度、密度和声速的月平均变化规律进行了分析，得到的海洋要素平面分布。
Eschewing the more traditional use of guitar or heavy keyboards that might be associated with the band's umbral sound, the instrumentation of A Whisper in the Noise has included the cello, violin, French horn, synth/electronic keyboard, bass guitar, and percussion in some variation.
很少使用吉它或重型键盘配合乐队阴沉声音的传统做法，A Whisper in the Noise所使用的乐器一定程度上包括了大提琴，小提琴，圆号，合成器/电子键盘，低音吉它和打击乐器。
It was found that the experimental group scored significantly higher than the control group on the reading subtest of The Wide Range Achievement Test 3 （WRAT 3）, the sound and meaning subtests of The English Word Recognition Test, the sentence comprehension subtest of The English Reading Diagnostic Test, and the Motivation for Reading Questionnaire. This meant that the balanced reading program had a generally positive impact on students` reading ability and reading motivation. However, there was no significant difference between the groups on the spelling subtest of the WRAT 3. Furthermore, the variation in these fifth graders` word recognition ability was very great, ranging from an ability level below that of third graders to the ninth-grade level.
结果显示实验组的学童在WRAT3 的阅读分测验、英文认字测验的读音分测验和字义分测验、句子理解分测验和MRQ 阅读动机问卷等方面显著高於控制组，说明平衡阅读教学实验课程有效提升学童之阅读能力和阅读动机，但是在WRAT3 拼字分测验中，两组未达显著差异；而这些五年级学童的认字能力差异很大，从低於国小三年级的程度到高达国中三年级的程度都有。
One major contributor to the perceived loudness of commercials is that mush less variation in sound level occurs during a commercial.
广告响的一个主要因素是，一个广告中，音量高低的变化很小。
That is to say, there are regulations to go by in variation of phonetic sound, vocabulary and grammar of AAVE. It is neither changeful nor obscure.
这就是说，黑人英语在语音，词汇，语法等方面的变异有规律可循，并不是混乱或任意变化的。
Sound change is one of the important aspects of language variation, which is very common both in English and Chinese.
音变是语言变化的一个重要内容，音变在英语和汉语中都普遍存在。
There is huge variation in how people are affected by loud sound, however, and this is an area where a number of researchers are conducting studies.
这巨大的变化体现了噪音对人的影响有多大，然而，同时这是一个许多研究者正在努力的方向。
The results show that the variation of static hydraulic pressure does not significantly affect the deformation and sound absorption performance of the structure with compound cavum.
结果表明，静压变化对复合渐变过渡型空腔的橡胶结构的形状和吸声性能影响最小。
The fundamental principle of ultrasonic-waves method is that observing the relative variation of acoustic parameters, such as sound (velocity) or amplitude, to analyze whether the quality of duct grouting is good.
为进一步的探究提供了基本的理论依据。3.超声波法的基本原理是通过观察声时、声速和波幅等声学参数的相对变化来分析管道灌浆质量的好坏。
Anomalous sound propagation due to the horizontal variation of seabed acoustic properties
海底声学特性水平变化引起的异常声传播
Using the mathematical analytical method, this paper interprets some of the errors arising from the double wave-beam Doppler Log, such as those in sound speed, signal variation, transducer installation and beam angle variation.
本文利用数学解析法分析了双波束多普勒计程仪的某些误差，即声速误差，信号起伏误差，换能器安装误差以及波束发射角变化引起的误差等。
The issues, concerned are: the variation in the scale of fiscal revenue and expenditure, the recognition of fiscal risks, the continuous hiking of lax revenue, the soft budget constraint, the basic trend of the sound fiscal policy and the new tax reform.
其中包括：财政收支规模的变化、财政风险问题的判断、税收收入的持续高速增长、预算约束机制的弱化、稳健财政政策的基本去向和新一轮税制改革。
By monitoring noise and recording the variation of vehicle model and traffic thins of each lane in monitor sites of thruway and referring to other parameters of the monitor sites of thruway, sound source distribution of traffic noise was studied.
通过现场噪声监测，记录高速公路监测点位各车道车型车流量的变化，同时参照该点位高速公路的其他参数，探究高速公路交通噪声的源强分布。
It was found that regenerative noise of pipeline is the main noise source of aeration system in sewage treatment plant with sound pressure measurement. Increasing diameter of pipeline, decreasing variation of pipe cross section and insetting silencers could reduce noise to meet the National Standard.
利用声压测量技术判知某城市污水处理厂鼓风曝气系统以管道再生噪声为主要噪声源，采取加大管道直径、减少管道截面变化、加接消声器等措施后，噪声污染已控制到国家允许标准以下。
Through using multi-frequency theory to analyze the noise of the tail rotor, the relative sound pressure variable law is calculated according to the variation of scissors angle.
本文通过利用多频调制方法对尾桨噪声进行理论分析，得出相对声压值随剪刀变化的规律；
The change of coefficient of variation with range in a surface sound channel was calculated numerically.
并对表面声道中起伏率随距离的变化作了数值计算。