• 为了克服传统泛音比法弊端提出测定压电振子厚度振动机电耦合系数次泛音比法。

    To overcome the shortcoming of the traditional overtone ratio method, a higher overtone ratio method to determine the thickness vibration electromechanical coupling factors was presented.

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  • 利用弯曲振动试验、纵波传播试验、纵波共振试验测定刨花板动态抗弯弹性模量。

    The dynamic deflection moduli of particleboard were measured by flexural vibration. longitudinal transmission and longitudinal resonant vibration.

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  • 通过对实铸造振动填充紧实中的振动方向、维数频率加速度干砂种类诸多影响要素测定实验研究了实型铸造振动实干砂的性能。

    Vibratory compactability of dry sand in full mold foundry has been researched by experiments on effective factors such as vibratory direction, dimensions, frequency, acceleration and dry sand sorts.

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  • 简正振动方式理论分析混响室内功率测定问题,求得了严格公式统计公式,解决了测试中多年未有定论问题。

    Sound power determination in reverberation chambers is discussed in the light of normal mode theory. Rigorous as well as statistical formulas are found, and the aged problem of.

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  • 目前测定纤维细度只有采用振动测定仪器

    Presently, only measuring instrument using vibration method can be adopted to measure the fineness of a thread of short fiber.

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  • 通过单摆装置可以方便地研究单摆振动周期关系测定当地重力加速度

    Using the single pendulum, we can research the relationship between the period of oscillation of it and the length of it and measure local acceleration of gravity.

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  • 红外光谱法测定角质层中C-H对称对称伸缩振动吸收峰峰位及其面积

    The peak shift and peak areas of C-H stretching vibration absorption were estimated by Fourier transform-infrared(FTIR).

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  • 台起进行稳态强迫振动试验测定阶自频率阻尼振型。

    The first ten natural frequencies, damping ratios and mode shapes of the dam were measured through steady forced vibration test using multiple vibrators.

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  • 本文论述了振动作业433名健康工人振动觉、触觉测定的方法及结果。

    Vibratory and pain sensation thresholds for 433 healthy workers without history of vibration exposure in one factory were studied.

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  • 为了影响这些建筑设施安全,本文介绍大港地区炸药震源水平径向振动影响测定方法

    In order not to damage these buildings, the method for determining, in Dagan area, the horizontal vibration wave field of an explosive source is recommended.

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  • 测定23种芳香胺样品红外光谱,对氨基伸缩振动吸收峰与其结构关系进行了探讨

    The ir spectra of 23 aromatic amines were determined and the relationships between the spectra of amide groups stretching vibrational absorption and their structures have been investigated.

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  • 实验中就要测定单摆然后测定摆长时的振动周期

    So in experiment we should measure the length of single pendulum, then get the period of oscillation in this condition.

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  • 试验测定振动助流时散体颗粒初始阶段稳定流动阶段振动加速度信号流动中波传播规律进行分析。

    The vibration acceleration signals at initial stage and steady stage in flowing granular media are tested, and the propagation of wave in the flowing field is analyzed.

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  • 采用剪鳍标记现场模拟法测定钻井噪声振动草鱼生长影响

    Effects of petroleum drilling noise and vibration pollution on growth of grass carp, Myloparyngodon piceus, were studied by cut-fin marking method on petroleum reconnoitering spot.

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  • 振动频率回弹动弹模一定影响,高振频使测定有所下降。

    Vibratory frequency has some effect on measured value of the unloaded dynamic elastic modulus. Higher vibratory frequency may decrease a little the value of the modulus.

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  • 振动测试法斜拉桥索力测定监测状态评估中应用广泛一种方法

    Experimental vibration measurement is one of the most widely used methods for tension evaluation and condition assessment of cable-stayed Bridges.

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  • 本文介绍通过检测机器振动周期来间接测定封闭式压缩机转速方法

    This paper discusses the method of determining the rotational speed of a full-closed compressor by means of measuring its machinery vibration period.

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  • 采用防水型加速度计,不同工况下测定洗涤冷却振动信号,并用小变换分析信号;讨论了表观静态液位对小波功率影响,分析了冷却管振动的原因。

    The effect of superficial gas velocity and static water height on the wavelet power spectrum is dis- cussed and the vibration mechanism of the tube is analyzed.

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  • 抗滑分析计算所用土动力特性参数原状试样共振试验振动单剪试验直接测定

    In the end, we calculated the stability factor with dynamic characteristic parameters of undisturbed sample taken from the ground. Those parameters were measured by the resonant column test and cy...

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  • 本文用AU-02A振动测定测定了172名接振工人308名对照者振动觉阈值

    The measurement of the threshold of seismesthesia between 172 workers with vibration exposure and 308 controls were reported by using the AU-02A type device.

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  • 现场试验包括:①测定冲器水平力作用产生地面加速度以及制桩时引起的地面加速度振点距离之间的关系;

    The in-situ measurement includes:( 1 ) the ground acceleration due to horizontal vibrating force caused by the vibroflot and its variation with the distance from the vibrating center;

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  • 为了保证机床机械运转状态达到规定振动指标,应对机床进行振动噪声测定

    The vibration and the noise of the machine tools were tested to make the mechanical movement state of the machine tools reach a high standard.

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  • 本文测定对应于苯甲酸分子不同部分振动表面增强拉曼强度随温度变化情形。

    The surface enhanced Raman (SER) intensities of the modes corresponding to the various portions of the benzoate molecule in the silver Sol are studied as a function of temperature.

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  • 结果表明U型振动管密度计工作稳定方便快捷,测量精度,用于乙烯焦油密度测定效果好。

    The results indicate that, It works stability, convincible and quickly, Precision is high, the result of density of ethylene tar is well.

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  • 流变振动利用等截面杆纵向简谐振动测定材料的阻尼,十分方便和有效。

    This paper presents a simple method for measuring gas adiabatic constant by use of simple harmonic oscillation.

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  • 流变振动利用等截面杆纵向简谐振动测定材料的阻尼,十分方便和有效。

    This paper presents a simple method for measuring gas adiabatic constant by use of simple harmonic oscillation.

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