助手标题  
全文文献 工具书 数字 学术定义 翻译助手 学术趋势 更多
查询帮助
意见反馈
   声学现象 的翻译结果: 查询用时:0.013秒
图标索引 在分类学科中查询
所有学科
物理学
建筑科学与工程
更多类别查询

图标索引 历史查询
 

声学现象
相关语句
  acoustic phenomenon
     THE ACOUSTIC PHENOMENON OF A COMPRESSOR BLADE STALL FLUTTER
     压气机叶片失速颤振的声学现象
短句来源
     Testing and Basis Analysing of The Acoustic Phenomenon of Ice Tiantan Echo-Architecture
     冰质天坛回音建筑声学现象的测试与初步分析
短句来源
  acoustical phenomenon
     The Test and Analysis for Acoustical Phenomenon of Sichuan Stone-Piano
     四川石琴声学现象的实验测试与分析
短句来源
     The study of the acoustical phenomenon of the four famousecho architectures in China
     我国四大回音建筑的声学现象研究
短句来源
     A NEW DISCOVERY OF THE ACOUSTICAL PHENOMENON OF TIANTAN'S HUANGQIONGYU
     天坛皇穹宇声学现象的新发现
短句来源
     on March 26,1994,our research group found the magic acoustical phenomenon of Tiantan's Dialogue Stone,which is related to the echoing wall and the Eastern and Western Side Halls in Huangqiongyu(The imperial Vault of Heaven)of Tiantan.
     1994年3月26日,作者在天坛皇穹宇内发现了一个与回音壁和东、西配殿相关的奇妙声学现象──天坛“对话石”声学现象
短句来源
  “声学现象”译为未确定词的双语例句
     This new discovery and its scientific explanation are very important for cultivating the source of tourism and promoting its development.
     这一声学现象的发现和科学解释对开发天坛这一旅游资源,促进旅游事业的发展也将起到积极的作用。
短句来源
     Nonclassical nonlinear acoustic phenomena such as hysteresis and discrete memory are shown in rock and concrete and other mesoscopic elastic material,which are different from classical nonlinear acoustics.
     岩石、混凝土等非线性介观弹性固体材料显示出与经典的非线性声学不同的非经典非线性声学现象,比如滞后现象、离散记忆等。
短句来源
     A NEW DISCOVERY OF THE ACOUSTICAL PHENOMENOIV OF TIANTAN' S DIALOGUE-STONE
     天坛声学现象的新发现——对话石声学现象
短句来源
     The First Test and Analysis for Acoustical Effect of the Echo Wall in the Temple of Heaven
     天坛回音壁声学现象的首次试验测试及初步分析
短句来源
     Furthermore, the new theory can explain the phenomenon that thin fiber layer absorb sound more less when it was as the cover fabric of sound absorber,but has good sound absorption ability when it was hang as the curtains or have back cave behind it.
     作者在研究中发现,将膜振动理论的某些结论与毛细管吸声理论结合后,建立的薄纤维层(如织物、无纺布等)吸声理论方程不仅与实验结果吻合较好,而且可以较好的解释薄纤维层在作为护面材料或紧贴墙壁时吸声系数等于或接近于零,而作为窗帘或背后有空腔时却具有较好的吸声效果的这一长期未能解释的声学现象.
短句来源
更多       
查询“声学现象”译词为用户自定义的双语例句

    我想查看译文中含有:的双语例句
例句
为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。
  acoustic phenomenon
At the same time the acoustic phenomenon accompanving the shocks has been observed directly.
      
However, the more tractable problem of localizing brief, distinct acoustic phenomenon can can be solved without intensive computation.
      
The cavity acoustic phenomenon consists of an unstable free shear layer impinging on the downstream wall of the cavity.
      
We have speculated that this single antiresonance is caused by an acoustic phenomenon of the air in the airways.
      
  acoustical phenomenon
Indealingwith sound as an acoustical phenomenon, delay is a direct result of the finite velocity of sound.
      


The long period crustal movement prior to earthquakes has been noticed for a long time. However, the problem of zerodrift of long period seismographs rendered the observations with such seismographs tentative or experimental in nature. Besides, when the underground gas spurts oat and sets free before earthquakes, the observation of such gas can be made only near it but not too far away. The microbaro-mic waves, such as infrasonic and gravity waves caused by the gas outspurts and long period ground movements...

The long period crustal movement prior to earthquakes has been noticed for a long time. However, the problem of zerodrift of long period seismographs rendered the observations with such seismographs tentative or experimental in nature. Besides, when the underground gas spurts oat and sets free before earthquakes, the observation of such gas can be made only near it but not too far away. The microbaro-mic waves, such as infrasonic and gravity waves caused by the gas outspurts and long period ground movements prior to earthquakes may be detected at a distance, thus should be studied.Infrasound caused by seismic waves has been noticed long ago, but no report on infrasound before earthquakes has been made. After the 1976 Tangshan earthquake, from August 1976 to March 1977, the author observed microbaromic waves prior to aftershocks with microbarograph at Peking. More than ten of this kind of waves were observed. Its characteristics are as follows: the period is 40-80 seconds, sonic pressure 1-5μb(microbar), duration lasts a few minutes and it appeared 1-16 hours prior to the earthquakes.In this paper, a method of analysis for recognizing microbaromic waves prior to earthquakes is developed. Its possible mechanism and other phenomena have been discussed.

地震之前长周期的地壳运动已为人们所关注,然而在零漂等问题尚未解决之前,长周期地震仪观测仍处于试验性阶段.另外,震前地气的喷溢和释放,只能在喷口处观测,距离稍远,就观测不到了,但由此而引起的大气振动和声学现象,却可在一定距离范围内观测到.因而可开展震前由长周期运动和地气等引起的大气声波、重力波等微气压波的观测研究.地震波所激发的次声,前人已有研究,但地震前的次声,中外文献还未见报道.1976年唐山地震后的1976年8月至1977年3月,笔者在北京首次开展微气压波的观测,发现了十余次地震前的微气压波,其特征为40—80秒的周期,1—5微巴的声压,波列很短,仅数分钟,出现于震前1—16小时.本文提出了识别震前微压波的分析方法,并讨论了其产生的可能机制和有关的临震现象.

A further development of the theory on the wave propagation in porous, fluid-saturated media presented by the writer in works (1,2) is made in this paper by taking account of the compressibility of fluids. After introducing an idea of quasi-microscopic continuous conditions, the basic system of dynamic equations of such media is established by combining the equations of the compressible fluid dynamics with those of the theory of elasticity or viscoelasticity. That there are two P waves; and one S wave was also...

A further development of the theory on the wave propagation in porous, fluid-saturated media presented by the writer in works (1,2) is made in this paper by taking account of the compressibility of fluids. After introducing an idea of quasi-microscopic continuous conditions, the basic system of dynamic equations of such media is established by combining the equations of the compressible fluid dynamics with those of the theory of elasticity or viscoelasticity. That there are two P waves; and one S wave was also proved.It is pointed out that the two phased media can be simplified by two ideal models according to their disperse state, seepage ability, constituent arrangement structure, etc.. For the case of our concern, model 2, the media are mechanically coupled by the seepage force, which can be assumed to obey Darcy's law, and the compatibility conditions in a unit volume. If the seepage flow can take place freely, for example, the case of saturated gravel strata as well as porous piastie materials, it is shown that one hydrodynamic wave into fluids and two solid stress waves into the solid skeleton can be set up, which, in particular cases, are of value to explain some geophysical and acoustic phenomena. In general cases, there are damping and dispersion effects.The significance of carefully distinguishing the two physical models is also discussed.

考虑到流体的可压缩性,笔者进一步发展了以前的结果。引进了准微观连续条件的概念,直接联合应用流体动力学方程和固体的弹性或粘弹性力学方程,即得到了此种介质的动力学方程组,其中直接引用了流体和固体的弹性(或粘弹性)系数,较之Biot从物理考虑而建立的应力—应变关系中的后两个常数Q、R具有更明确的物理意义,因而更便于用常规的方法确定。证明了,此种无限介质中通常具有两种P波和一种S波,且具阻尼和频散效应。对于几种极端情况可以明确地得到固体波和流体波,有助于近似地解释一些地球物理和声学现象。文中还指出了区分两种典型的计算模型的重要意义。

This paper describes the initial experimental results of aeroelastic instability of BF-1 rotors on a transonic axial compressor facility at BIAA. Designing of BF-1 rotors depends upon the principle that the total damping is equal to zero at the point near the stall flutter boundary. The experimental results show that the design principle of BF-1 rotors is correct. Two rotors, BF-1-1 and BF-l-2,have been run from 8000 rpm to 16500 rpm. Several flow-induced vibration phenomena such as stalling flutter,wake-induced...

This paper describes the initial experimental results of aeroelastic instability of BF-1 rotors on a transonic axial compressor facility at BIAA. Designing of BF-1 rotors depends upon the principle that the total damping is equal to zero at the point near the stall flutter boundary. The experimental results show that the design principle of BF-1 rotors is correct. Two rotors, BF-1-1 and BF-l-2,have been run from 8000 rpm to 16500 rpm. Several flow-induced vibration phenomena such as stalling flutter,wake-induced vibration, stall vibration of the blades,have been observed in experiments. In addition,a loud monotonous screaming has been heard during the stalling flutter onset. A primary theoretical analysis of this special sound is discussed. This paper also presents the experimental results of effects of the blade tip clearance and the airfoil shape on the stall flutter boundary. By comparison of the empirical methods to predict the stall flutter onset with the experimental results,it is believed that these prediction methods are acceptable.

本文介绍了在跨音压气机试验台上对BF-1系列转子开展气动弹性失稳的实验研究工作。文中提出了实验模型的零阻尼设计原则,描述了失速颤振发生的过程。分析了失速颤振发作时的气动声学现象——一种特殊的啸声。此外还给出了两种叶尖间隙和两种叶型对失速颤振影响的实验结果。最后对经验预测方法和实验结果作了对比,符合情况较好。

 
<< 更多相关文摘    
图标索引 相关查询

 


 
CNKI小工具
在英文学术搜索中查有关声学现象的内容
在知识搜索中查有关声学现象的内容
在数字搜索中查有关声学现象的内容
在概念知识元中查有关声学现象的内容
在学术趋势中查有关声学现象的内容
 
 

CNKI主页设CNKI翻译助手为主页 | 收藏CNKI翻译助手 | 广告服务 | 英文学术搜索
版权图标  2008 CNKI-中国知网
京ICP证040431号 互联网出版许可证 新出网证(京)字008号
北京市公安局海淀分局 备案号:110 1081725
版权图标 2008中国知网(cnki) 中国学术期刊(光盘版)电子杂志社