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measurement is
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  测量
    The differential-pressure vacuum measurement is a commonly -used measuring mode in the vacuum range from 0.1 kPa to 100kPa or 1 to 760 torr.
    差压式真空度测量是低真空范围(0.1-100kPa或1-760乇)的一种常用测量方法。
    A feasible model of the system of light-section and image scanning used for volume measurement is given, in which just two parameters need to be calibrated.
    本文还结合光切法视觉测量系统的实际情况,给出了一种光切法成像的简单模型,能满足实际测量需要,且需要标定的模型参数少,只有两个。
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    The accuracy of the measurement is±15%.
    测量误差不超过±15%。
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    Based on measuring the cross-spectrum density of sound pressure between two hydrophones, the facility for underwater sound intensity measurement is investigated and designed.
    基于双水听器互谱测量法,研制的水声声强测量设备可用于测量水下声源产生的声场中任意点的声强量值或任意面上的声强量值分布。
短句来源
    Therefore, the accurate measurement is the every researcher s target.
    因此精确的测量气泡的尺寸是每一个研究者所追求的目标。
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  测量是
    The differential-pressure vacuum measurement is a commonly -used measuring mode in the vacuum range from 0.1 kPa to 100kPa or 1 to 760 torr.
    差压式真空度测量是低真空范围(0.1-100kPa或1-760乇)的一种常用测量方法。
    In lots of industrial product process, viscosity measurement is important means of controlling product flow, achieving product security, improving and guaranteeing quality of products, saving and developing energy.
    在不少工业生产过程中,粘度测量是控制生产流程、实现安全生产、提高及保证产品质量、节约与开发能源的重要手段。
短句来源
    The differential-pressure vacuum measurement is a commonly-used measuring mode in the vacuum range from 0.1 kPa to 100 kPa or 1 to 760 torr.
    差压式真空度测量是低真空范围 (0 .1~ 10 0 k Pa或 1~ 76 0乇 )的一种常用测量方法。
短句来源
    Contact measurement is that the probe is contacted with the object surface.
    接触式测量是指测量头与实物表面有接触,采用设备主要有:三坐标测量机(Coordinate Measuring Machine ,CMM);
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    Sound intensity measurement is an advanced method of ascertaining sources of noise.
    声强测量是噪声源探查的有效手段之一,但声强测量过程很复杂,尤其当机械设备较大时,更需花费很多时间。
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  “measurement is”译为未确定词的双语例句
    The temperature compensation principle of refractive ultrasonic Doppler liquid flow measurement is discussed,thereby a measurement model is derived and an instrument developed on the basis of analysing and calculating the Doppler velocity data.
    本文叙述折射式超声多普勒测速方法的温度补偿原理,导出测速模型,并对多普勒速度信息进行分析计算,研制了仪器。
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    The relative precision of thickness measurement is less than 0. 2% and the precision of molecular ratio is almost 0. 015 at 2. 5 of Si/W molecular ratio (relative precision is almost 0.56%).
    膜厚测定的相对精度在0.2%以下,对于Si/W=2.5,摩尔比精度约0.015%(相对精度约为0.56%)。
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    The speed of image reconstruction of voidage distribution display is greater than 25 frames per second and the maximum error of global voidage measurement is less than 5%.
    空隙率分布在线测量的速度可达25幅/秒以上,整体空隙率测量的最大误差可小于5%。
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    Compared to laser interference measurement,the precision of laser beam deflexion measurement is low,it is about 2.12%,the least stress which could be measured is 25.5MPa,and space resolution is low as well,which is approximate 100μm.
    激光束偏转法较低,为 2. 12%,可测量的最小应力值为 25. 5MPa,空间分辨率低,约为 100μm。
短句来源
    The further research on the influence of energy attenuation on supersonic velocity measurement is given,and the results of theoretic analysis and numerical simulation are in keeping with the experiment.
    进一步研究了能量损耗对超声声速测量的影响,理论分析与数值模拟的结果与实验基本一致。
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  measurement is
An effective approach combining theoretical analysis and mathematical calculations with experimental measurement is presented in this paper to determine the grinding area and allowance for compensating the boresight error performance of the radome.
      
Compared with the method via non-modulated electron beams, the instrument of measurement is simplified.
      
It is predicted that the superposition persistence time will increase if the measurement is carried out with a low accuracy and a minimum variance.
      
A method of SEM linear measurement is proposed in which the reference marker displayed on the screen is used as a standard.
      
The sensitivity of this method can be high because frequency measurement is one of the most accurate measurements in physics and metrology.
      
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The measurement of flow rate is directly associated with effeciency test of solar collector and therefore with evaluation of its thermal performance.The flow rate in the tests of both flat and concentrating solar collectors are so small that non of available flowmeters can be chosen.In addition,plant oil is often used as heat transfer medium in concentrating collectors.Viscosity of the oil changes with variations of temperature.That makes the measurement of flow rate more difficult.Pressure sensor of silicon...

The measurement of flow rate is directly associated with effeciency test of solar collector and therefore with evaluation of its thermal performance.The flow rate in the tests of both flat and concentrating solar collectors are so small that non of available flowmeters can be chosen.In addition,plant oil is often used as heat transfer medium in concentrating collectors.Viscosity of the oil changes with variations of temperature.That makes the measurement of flow rate more difficult.Pressure sensor of silicon semiconductor is very small and highly sensitive,reacts quickly and without any error caused by additional stress.It is quite conveniet to collect and proceess its electric output signal.It can be used for measurement of the flow rate.Such a device is developed and described in this paper.The accuracy of the measurement is approximately about 1.1%,is enough for thermal performance test of solar collector.

本文介绍用半导体硅力敏器件测量小工质流量的方法及装置。这种测量不受工质温度、粘度等状态的影响,可用于太阳能平板和聚光集热器的热性能试验,测量各种介质在不同状态下的流量。

A new experimental apparatus for the measurement of pressure-volume-temperature-composition (P-V-T-x) of refrigerant mixtures is described. A modification in pressure measurement is taken for the apparatus, where the dead weight piston pressure gauge coupled with a mercury U-tube manometer designed for quick and precise measurement of pressure. The main inner volume of sample vessel is calibrated by water, and the inner volume of the valve, tubing and the differential pressure null-detector connected...

A new experimental apparatus for the measurement of pressure-volume-temperature-composition (P-V-T-x) of refrigerant mixtures is described. A modification in pressure measurement is taken for the apparatus, where the dead weight piston pressure gauge coupled with a mercury U-tube manometer designed for quick and precise measurement of pressure. The main inner volume of sample vessel is calibrated by water, and the inner volume of the valve, tubing and the differential pressure null-detector connected to the sample vessel is calibrated by refrigerant with the aid of the calibrated sample vessel. The experimental date of vapor pressure and P-V-T relationships for dichlorodifluoromethane have been taken by the experimental apparatus for the purpose of checking the apparatus. The experimental results agree well with the ASHRAE data. The data and their comparisons are given.

本文详细地介绍了自制低沸点工质定容式PVT_x实验装置的实验原理、功能及技术指标。这套装置系全部采用国产仪器和设备,其温度测量范围为-30~200℃,压力测量范围为负压~60bar。文中详细介绍了试验块体积的标定方法和实验数据偏差分析。利用这套装置,对国产氟里昂R12等五种纯、混合工质进行了试验,有关R12(150组)的实验情况及偏差比较,附有详尽的数据表格及与美国手册[1]比较的结果。

As a complement of expensive nondestructive testing technique (NDT), the quality diagnosis of thin composite plates by damping and mode shape measurements is presented. The principles of vibrational NDT are briefly introduced. The damping measuring techniques to obtain the results accurately are presented. Some particular problems encountered in measuring the damping value of thin composite plates, such as nonlinearity, beat and crowed modes are discussed. For the examples, correlated with their manufacturing...

As a complement of expensive nondestructive testing technique (NDT), the quality diagnosis of thin composite plates by damping and mode shape measurements is presented. The principles of vibrational NDT are briefly introduced. The damping measuring techniques to obtain the results accurately are presented. Some particular problems encountered in measuring the damping value of thin composite plates, such as nonlinearity, beat and crowed modes are discussed. For the examples, correlated with their manufacturing quality, the results of damping and mode shape measured of thin mica-based composite plates are discussed.

复合材料薄平板经热压制成后,都需要进行质量检测。本文探索用测量模态阻尼和振型的方法,对复合材料薄平板的制作质量进行无损检测,作为对其它昂贵的无损检测方法的补充。略述用振动方法进行无损检测的原理,测量薄平板阻尼的方法以及提高测量精度的措施。还讨论在测量薄平板阻尼时可能遇到的一些特殊问题(如非线性刚度、拍、模态密集等问题);以云母基复合材料薄平板作为例子,从测量其阻尼和振型的结果,对这种板的制作质量进行讨论。

 
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