查询词典 sound velocity

The paper presents a new type of audible sound velocity measurement system.

研制了一种声频率范围内的声速测量系统。

The improved experiment device of interference of sound wave can feel the interference countervail and strengthening of sound in ordinary lab, and measure the sound velocity.

本文给出了改进声波干涉实验装置的具体方案，该改进装置可在普通实验室内感受声音的干涉相消和干涉加强现象，并能测定声速和频率。

The sound velocity of enstatite is measured with the optical analyzing method at the pressure range 40-140Gpa.

在40-140GPa冲击压力范围内，用光分析技术测量了顽火辉石高压相的五个压力点上的声速值。

In this disseration, Hugoniot equation of state and sound velocity of enstatite at high pressure are studied under shock compression and their application in geophysics are discussed.

本文试图用冲击压缩实验方法，通过研究顽火辉石在下地幔压力区的Hugoniot状态方程和高压声速，并结合由地震学研究提出的PREM模型进行综合对比和分析，进一步澄清下地幔的主要组成矿物及其相态等问题。

Using the data of sound velocity experiments, static high-pressure research and geophysics, the temperature coefficient of enstatite′s compressional wave velocity, thermal and density anomalies in lower mantle are estimated.

在上述的数据分析过程中，还得到了下地幔区钙钛矿型SiO〓相态纵波声速的温度系数，并由此估算出下地幔底部的温度异常幅度为65-137K，〓约为2.8/。

Error Analysis of UGPS Error sources of UGPS include GPS observation error, attitude error, baseline network strength, sound velocity error, time measuring error.

系统的误差分析实现水下的精密定位，需要分析影响系统定位的各种因素。

Based on the prior information obtained by qualitative inversion, the two stages inversion method was put forward. That is, the first stage is that distinguishing the high-quality element and non- high-quality element, and determining the initial iteration value of element sound velocity reasonably. The second stage is that treating differentially the constraint weights of the high-quality element and non- high-quality element, and then quantitatively inversing the final sound velocity distribution. The results of two concrete specimens indicate that the two stages inversion method can inhibit artifacts effectively and has better defect identification effect than normal one stage inversion.

在获取定性反演先验信息的基础上，提出了两阶段反演的方法：第一阶段，区分优质像元和非优质像元，合理确定像元声速的迭代初值；第二阶段，区别对待优质像元和非优质像元的约束权重，定量反演最终的速度分布。2个混凝土试件的模型试验表明，两阶段反演能有效抑制伪像，具有比常规的一阶段反演更好的缺陷识别效果。

The Anton Paar Density and Sound Velocity Analyzers combine two independent parameters, density and sound velocity, to cover a wide range of applications such as quality control in beer and soft drink production, concentration determination of sulphuric acid and oleum or ternary solutions.

安东帕密度和声速分析仪结合两种独立参数--密度和声速，覆盖大范围的应用如：啤酒和软饮料生产中的质量管理、硫酸、发烟硫酸或三元混合液体浓度的测定。

In view of undeterminable parameters andinadaptability to both gas and liquid in existing acoustic velocity models,a new sound velocity model based on PREOS has been established by analysing relationship between pressure,speed of sound and temperature.

针对目前声速模型存在参数难以确定，不能同时适用于气液两种相态等问题，通过分析压力、声速及温度三者的关系，基于PR状态方程开发了声速的新计算模型。

The influence of the size of sound lens and the sound velocity in sound lens material and crude oil and rock stratum on the sphere of action is studied.

分析了声透镜尺寸及材料中的声速、原油及岩层中的声速对其传播距离的影响。

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。