查询词典 speed of sound

By using the CFD software FLUENT, the inner-flow field of centrifugal fans with ruled-surface impeller versus with enveloping surface impeller has been simulated. The static pressure distribution, the dynamic pressure distribution, the total pressure distribution, the turbulent intensity and the speed vector of the two kinds of centrifugal fans are then analyzed and compared. From the calculating results, we found that the pressure distribution, the speed vector and other parameters of the two kinds of centrifugal fans are basically same. This implies that the tool-path generating arithmetic for the machining of the impeller can meet the aerodynamic requirements of the centrifugal fan. Furthermore the method can provide proof for designing department to establish sound manufacturing tolerance for impeller.

最后采用CFD软件FLUENT，利用标准k-ε湍流模型，采用分离隐式求解器，分别对直纹面叶轮离心通风机和包络面叶轮离心通风机整体风机内部三维流场和单个通道流场进行了数值模拟计算，在计算结果的后处理中，对相同坐标值处的静压力、动压力、湍流强度和速度矢量等参数进行了分析与比较，结果表明：在相同的计算参数条件下所得到直纹面叶轮离心通风机和包络面叶轮离心通风机内部流场差别不大，从而揭示所采用的叶轮数控加工的刀位规划方法的规划误差对流体机械动力性能的影响不大，这也为设计部门制定合理的叶轮加工公差提供了依据。

As for Hebe for this piece of notch, has had the courage mouse dubbing which most is afraid for oneself, what matches in the movie is the mousie Mi Lou's sound, although the role does not have Ella, Selina to come to eat heavy, but this role is actually in the movie the ending most essential role, Hebe estimated mousie's point to live the song, as soon as entered in the recording room to try the sound, the outstanding performance let the dubbing director commendation immediately, let Hebe complete the dubbing work by the extremely quick speed, let Ella, Selina laugh at her afterward to find the life the new ambition, completely suitable to work as "the petty people", let Hebe not know whether to laugh or cry self-ridicule:"I am petty people radically, this role is too really suitable I!".

至于Hebe则为本片豁了出去，鼓起勇气为自己最害怕的老鼠配音，在电影中配的是小老鼠米娄的声音，虽然角色没有Ella、Selina来的吃重，但这个角色却是电影里结尾最关键的角色，Hebe揣摩了小老鼠的尖生细语，一进录音室里试音，马上出色的表现就让配音导演称赞不已，让Hebe以极快速度完成配音工作，事后让Ella、Selina笑她找到人生的新志向，完全适合当"鼠辈"，让Hebe哭笑不得地自嘲说："我根本就是个鼠辈，这个角色实在太适合我啦！"。

A method for protecting channel error code resistance ability of low speed vocoder includes applying improved Chinese plain code and BCH code to separately protect voice parameter in voiceless and voiced sound frames at coding end, using BCH code to recover relevant parameters of voiceless sound frame and using maximum post verification probability rule to recover parameter of voiceless sound accurately for voiced sound frame then using line spectrum to parameter anti-error code algorithm to recover line spectrum to parameter at decoding end.

该方法在编码端改变2.4kb/s SELP编码后清音帧清浊音参数的发送模式；采用BCH码和改进的(7，4)汉明码分别保护清音和浊音帧中的语音参数；在解码端，根据信源信道的联合特性采用分支判决确定清浊音；对于清音帧采用相应BCH码恢复出对应参数，对于浊音帧采用基于长时统计特性的最大后验概率准则恢复清浊音参数，并解码出线谱对参数第一级并对残留误码的线谱对参数采用线谱对参数抗误码算法恢复。

The pressure pulses propagate with rapidly declining strength and a speed of the same scale as velocity of sound.

近壁空泡溃灭是工程上研究空蚀问题的一个重点，它对泡壁瞬态特性计算的要求较高。

The paper, which is based on the "Research and Development of the Speed-up Train"s Manipulation of Optimization and Train Simulator project, concerns the sound system in the Train Simulator. In the paper, the sound system includes two parts contents: firstly, improving the sound effect of the sound simulation system in the Train Simulator and enhancing 3D sound effect, such as sense of distance, sense of orientation, Doppler Effect etc, to make the sound of training environment more verisimilar; secondly, realization of the speech communication in network between teacher and student in the Train Simulator.

本文是以铁道部科技发展项目"提速列车优化操纵与机车仿真器研究开发"为依托，对机车仿真器的声音系统进行研究：第一，对机车仿真器中声音仿真系统的音效进行改进，增加3D音效，如声音的距离感、方位感、多普勒效应等，使得训练环境音响更加逼真；第二，实现机车仿真器中教员与学员间的语音网络通讯。

The experment results show that the velocity of shock wave approximate equals tothe sound speed of water.

实验结果表明，冲击波的传播速度约等于水中声速。

At the circumstance of low speed of flow, the standing wave resonances of protruding and trap cylindrical cavities are also studied. The distribution of sound particle velocity and pressure of the standing wave in cavity are analysed.

还进行了陷落式和突出式两种圆柱形腔驻波共振的研究，分析了驻波共振的声场分布，其频率公式与实验值符合很好。

Perhaps it is caused by the rate of acceleration of the speed of the hammers; perhaps it is the way the damper stops the sound when it descends on the strings; perhaps it is the spacing of notes, the agogic qualities of the playing, or the flexibility of metric units-these and many other factors may influence tone quality.

也许它起因于琴槌加速度的比率；也许它因断音的弹奏方式去敲击琴弦从而阻止了声音；也许还是音符的间距的问题，弹奏活跃性，或公制化的可变性－这些和那些许多因素都影响到音的质量。

Pickup modeling transforms the sound of a single-coil pickup into that of a humbucking pickup, a guitar synth that lets you play synth sounds, an intelligent pitch shifter that automatically harmonizes with your playing, a talk effect that produces the impression that your guitar is speaking, a slow attack effect that creates violin-type swells, a feedback effect that allows feedback playing techniques that are normally possible only at high volumes, a rotary speaker that changes speed in response to your picking or fingering dynamics, a fretless bass effect that simulates the distinctive sound of a fretless bass, and many more are ready for your use.

皮卡造型变换声单线圈皮卡，变成了humbucking皮卡，一把吉他的合成，让你玩合成音效，智能型沥青移自动理顺与你玩，讲座的效果，从而产生一种印象，你的吉他是说，一个缓慢的攻击效果，创造小提琴型涌浪，反馈作用，使反馈的演奏技巧，通常只有在高卷，旋转扬声器，变化速度回复您或采摘指法动态fretless一个低音效果，模拟不同声音一fretless男低音而更多的人准备好供您使用。

The use of Wallman deforming circuit brings the merits of a good linearity and high-speed attribute while overcomes the defect of sound thinness caused by Wallman circuit .

渥尔曼变形电路的应用，具有渥尔曼电路的良好线性与高速性，却又克服了渥尔曼电路声音单薄的缺点。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。