声学的

Compact pentroof combustion chambers and high-strength pistons that are resin-coated to reduce friction, low-tension piston rings and a low-friction valve train that uses roller rocker arms also are important features of this engine, as is an Acoustic Control Induction System that changes the length of the intake manifold runners based on engine speed and throttle opening.

紧凑pentroof燃烧室和高强度的活塞是树脂涂层以减少摩擦，低张力活塞环和低摩擦气门，使用滚子摇臂也是这个引擎的重要特色，是一种声学控制感应系统这改变了进气长度发动机转速和节气门开度为基础的多方面的选手。

It turns out that the flow and noise characteristics are quite complex and different from those of incompressible jets due to existence of quasi-periodic shock cell structures.

超声速射流是一般工业和军事工业中得到广泛应用的重要流动现象，对其流动特性和声学特性的研究，在实际应用和学术研究上有重要的理论价值和实际意义。

The principle and implementation of some familiar reconstructing algorithms on complex temperature field by acoustic methods is also presented. In order to improve the stability of the solution, the regularization method can be used to convert an ill-posed problem into a well-posed problem.

此外，还介绍了复杂温度场声学测量重建的几种常用算法的原理及实现方法，为了提高解的稳定性，可使用正则化方法将不适定性问题转化为适定性问题。

Simulation results show that the method solves dynamical product of HRTF data based on moving sound sources and the smooth transition of the fore-and-aft sound sequence signals. The method is more reliable and accurate than other methods, and realizes indoor acoustic simulation based on dynamic mechanism.

仿真结果表明，该方法较好地解决了运动声源HRTF数据的动态产生和前后声信号段平滑过渡问题，具有更好的真实性和精确度，实现了基于动态机制的室内声学仿真方法。

Simulation results show that the method solves dynamical product of HRTF data based on moving sound sources and the smooth transition of the fore-and-aft sound sequence signals.

仿真结果表明，该方法较好地解决了运动声源HRTF数据的动态产生和前后声信号段平滑过渡问题，具有更好的真实性和精确度，实现了基于动态机制的室内声学仿真方法。

A pop-science writer who has made Einstein, acoustics and meteorology intelligible to the right-brained, Levenson transforms inflation and metallurgy into a suspenseful detective story bolstered by an eloquent summary of Newtonian physics and stomach-turning descriptions of prison life in the Tower of London.

一个弹出科学作家谁已成为一个悬疑侦探由牛顿物理学和胃转折点，塔监狱生活的描述有力地带动摘要爱因斯坦的故事，声学，气象学理解的右脑，李文森变换通货膨胀和冶金伦敦。

Aiming at realizing processing long and thin hole on the vitro ceram, the ultrasonic machining technique was used. The design of ultrasonic machining acoustics system was completed. The analysis of the tool distorted and stress under the different pressure force was taken by finite element analysis.

为实现在微晶玻璃上的细深孔加工，采用了超声加工方法，完成了超声加工声学系统的设计，并用有限元分析方法对工具在不同压力下的变形和应力进行了分析。

When the squirt flow mechanism occurs, the squirt flow mechanism dominates the contribution to the energy loss of compressional waves at low frequencies.

依据非牛顿流体饱和各向同性孔隙介质BISQ声学模型，喷射流动只影响纵波的频散和衰减，而饱和流体的非牛顿流效应不仅影响纵波，而且还影响横波的频散和衰减。

You can learn from the documents home and abroad that most of researchers in sonochemistry major in chemistry or related subject such as enviorment or water treatment, etal.

综合国内外研究资料可以发现，从事声化学研究的学者大多数都是从事化学专业或与化学相关的环境或水处理等专业，尤其是国外，声学专业从事声化学研究的人很少。

Raman Shifts of the LA Phonons in a ZnSe/ZnTe Finite Strained Superlattice;2. By using quantum statistics, this paper obtains the initial results and the formula with which the entropy of phonons may be calculated.

采用量子统计方法，得到了声子熵的计算公式和初步结果，同时还指出在胰岛素与其受体的缔合反应中，声学支声子所提供的声子熵起了重要作用。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。