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|  | | 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。 | |
Laser Particle Size Analyzer measured the particle distributions in the dissolution of cinnabar.
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The composite latex particles and composite materials were determined and characterized using a laser particle size analyzer, transmission electron microscopy or scanning electron microscopy.
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In particular, the differential thermal analysis curves for the decomposition of CeO2 nanocrystalline precursor were measured at different heating rates in air by a thermal analyzer (NETZSCH STA 449C, Germany).
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The dispersibility and electrophoretic mobility of these particles in tetrachloroethylene (TCE) have been investigated by laser particle size analyzer, static sedimentation and electrophoretic instrument.
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X-ray diffraction (XRD), scanning electron microscopy (SEM) and an impedance analyzer were respectively used in order to characterize the phase status, morphology and dielectric properties of the thin films.
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| | The much discussed and controversial problem1) of ultrasonic absorption in ethyl and methyl acetates has been further investigated experimentally by the method of optical diffraction2) in progressive ultrasonic waves. In designing the equipment and throughout the measurement, special cares have been taken for the plane progressive nature of the ultrasonic field in the liquid trough, the elimination of stray light effect so that the receiver (a photomultiplier with preamplifier and a frequency analyzer... | | 关于超声波在乙酸乙酯和乙酸甲酯中的吸收问题曾引起了多次热烈的争论,为此,作者采用了行波中的光衍射法做了进一步的实验研究。在实验过程中,特别注意了仪器的精确度问题,并且对许多种吸收系数已知的标准液体进行了多次重复的测量,结果很好地符合于一般的公认值,且误差不超出5%。 对于两种乙酸酯,测量的频率范围是3-30Mc,温度保持20℃。测量结果表明,在实验的误差范围内,吸收的实验值很好地落在唯象单弛豫理论所预期的曲线上,弛豫频率对乙酸乙酯约在12Mc附近,对乙酸甲酯约在7Mc附近。并且通过对不同纯度的乙酸乙酯进行重复的测量,表示杂质引起的附加吸收并不影响吸收曲线的特性。因此也就明某些作者测量得到两个弛豫频率的结果是不真实的。作者并认为Karpovich首先提出的旋转异构的理论是适合于解释这两种液体的驰豫吸收的机理的。 | | 文摘来源 | | A stabilized high voltage power supply for an electrostatic analyzer is described in this paper. The design principle has been analyzed in some detail. The output voltage of this instrument may be varied continuously from ± 5 kv to ±20 kv. Within this range the voltage stability is better than ±0.015% for about 3 hours. The ripple voltage is one part in 16,000. This instrument had since served normally for more than two years and was shown to be sufficiently simple and reliable both in operation and m... | | 本文提出了一种稳定静电分析器用的高压电源的电路。文中对电路的工作原理及特点作了较详细的分析。本仪器的输出电压可自±20千伏变到±5千伏,在所有量程内电压的稳定度(约三小时〕优于±0.015%,波纹电压为1/16,000。二年多来该仪器一直运转正常,操作和维护是比较方便的。 | | 文摘来源 | | A hot-wire turbulence spectral analyzer for measuring the power spectrum of wind tunnel fluctuation flow was designed and constructed, basing on the principle of spectrum-analysis. In this paper the main parameters of the instrument and some experimental results are presented. | | 根据脉动气流的谱分析原理,制作了直接测量风洞气流脉动能谱密度的热线湍谱仪。本文介绍了该仪器的原理、详细结构和主要参数,并给出了一些测量结果。 | | 文摘来源 | |   | | << 更多相关文摘 |
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