查询词典 acoustic

When the popular band The Eagles prepares a new song for concert, they sit in a circle with acoustic guitars and unamplified voices and rehearse their intricate vocals.

每当「老鹰乐队」为演唱会准备新歌时，他们都会围着一起坐下来，在只有木吉他和没有扬声器的环境下以原声练习。

The fundamental principle is that the acoustic signal will be more attenuated in the presence of cement than if the casing were uncemented.

基本原理是声波信号在胶结存在时的衰减比胶结差时的要大。

It is difficult for conventional reflection seismic surveys to get the information of low velocity layers underlain high acoustic impedance layers, such as evaporites and basalts.

在蒸发岩、玄武岩等高阻抗岩层发育地区，常规反射地震往往难以获取高阻抗层以下的地层地质信息。

Regarding the density data and acoustic data in logging material as restriction, it also establishes undrilled district log through model seismic inverse, then, calculates elastic constant of rocks, density constant of rocks and even the profile of the following three pressures (pore pressure, caving pressure, fracture pressure). In the end, this thesis can determine safe drilling mud density windows, provide reference for drilling design, guides safe drilling and decreases the occurrence of accident.

将测井资料中的密度数据或是声波数据作为约束条件，通过模型地震反演，构建待钻区域的测井曲线，从而可以用理论和处理手段上比较成熟的测井分析的方法，进行岩石弹性和强度参数的计算，计算地层的三个压力(孔隙压力、坍塌压力、破裂压力)剖面，最终确定安全钻井液密度窗口，为钻井设计提供参考，指导安全钻井，减少钻井事故。

The beginning acoustic effect, which moves sluggishly, is to reminisce Joyce and Proust who initiated the composing technique of "stream of consciousness". Whilst the pile of sound piece, the unharmony tone and the application of "noisy music" in the ending part, are to show my pessimistic respect to Nuonuo, Pendereck, Schnittke, Pierre·Henry.

启始的凝滞的音响效果，是对开创了&意识流&写作技巧的乔伊斯、普鲁斯特等人背叛性的缅怀；后尾大段的音块、不谐和音程、&噪音音乐&的运用，又是对于诺诺、潘德列斯基、施尼特凯、皮埃尔·亨利悲观的致敬。

To study the variation features of infrared radiation and acoustic emission of concrete during the fracturing and water seepage process, a concrete block is pressurized with embodied water to uniaxially compressive stress. The changes of its IR radiation and AE are measured using an infrared thermal imager and a AE instrument.

对内含水体的混凝土试样进行单轴压缩加载，利用红外热像仪并辅以声发射仪，观测加载过程中试样的红外辐射与声发射变化特征，研究混凝土破裂与渗水的红外异常前兆。

The small but infinite amplitude dust acoustic wave DAW in a collisionless , unmagnetized two ion temperature cold dusty plasma has been studied .

论文第二章研究未磁化的，无碰撞的，双温度离子的冷尘埃等离子体中的有限小振幅尘埃声波。

In this thesis, an unmagnetized, collisionless dusty plasma which consisted of extremely massive, highly negatively charged dust particles, ions and electrons are studied. Considering the effects of hot dust fluid with non-thermal ions and variable dust charge, we study the self-consisted system parameters on the structures of the dust-acoustic solitary waves by reductive perturbation methods.

本论文研究无磁化、无碰撞的、由大质量且带负电量的尘埃颗粒、电子和离子组成的尘埃等离子体，考虑尘埃流体的温度、非热离子和尘埃颗粒电荷绝热变化的因素，使用约化摄动方法研究这个自洽的系统的参数对尘埃声孤波结构的影响。

Such as eliminating air-current pulsation in the design of main engine, setting up buffer, setting up acoustic filters , avoiding the air-current and piping vibration etc., These methods, not only in the times of designing pipeline, but also when the compressor cannotbeen adjusted greatly but working unsafely, are of momentous guiding significance.

这些措施和方法，不仅在配管的设计阶段中，而且在压缩机工作时，安全运转受到威胁而不能作大的调整时，都具有重要的指导意义。

Objective To probe into the clinical significance of applying acoustic densitometry to diagnosis untypical Kawasaki Disease of acute stage.

摘 要］目的：探讨声学密度定量技术在诊断急性期非典型川崎病中的临床意义。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。