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measured results     
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  测量结果
     Some measured results are given: VSWR≤1.25, average withstand power P≥2W from DC to 18GHz,
     最后测量结果给出:在DC~18GHz频率范围内,电压驻波比VSWR≤1.25,承受平均功率P≥2W.
短句来源
     The measured results for H + 4, H + 5 and H + 7 clust er ions are reported.
     报告了H+ 4 ,H+ 5,H+ 7等团簇离子的测量结果 .
短句来源
     Ten radionuclides in the standard reference material SRM 4350B(~(60)Co,~(137)Cs,~(152)Eu,~(154)Eu,~(226)Ra,~(4O)K,~(232)2Th,~(235)U,~(238)U,~(228)Th)weremeasured by intercomparison laboratoris,the measured results areanalysed in the paper.
     各比对实验室分析了 NBS 的 SRM4350B 河泥标准参考物质中的十种放射性核素(~(60)Co,~(137)Cs,~(152)Eu,~(154)Eu,~(226)Ra,~(40)K,~(232)Th,~(235)U,~(238)U,~(228)Th)。 文中对测量结果做了初步分析。
短句来源
     Compared with the isolation of PGR or PGR+NGR,the measured results show that the isolation degree of this structure is improved by 29.2 and 8.1dB at 1GHz,and by 8.1 and 2.5dB at 2GHz,respectively. With a 1.8V supply,each channel of the front-end amplifier consumes a DC power of 85mW,and the total power consumption of 12 channels is about 1W.
     测量结果表明,这种结构与PGR和PGR+NGR相比,在1GHz时放大器之间的隔离度分别提高了29.2和8.1dB,在2GHz时放大器之间的隔离度分别提高了8.1和2.5dB.芯片采用1.8V电源供电,单路前端放大器的功耗为85mW,12路总功耗约为1W.
短句来源
     Finally,the vertical transfer velocity of 137Cs suggests to be 0.6~1.2 cm/a according to two measured results.
     最后根据前后两次的测量结果得出137Cs的垂向迁移速率约为0.6~1.2cm/a。
短句来源
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  测试结果
     The measured results show that the stability is1.8×10~(-13)/s.
     测试结果表明,其短稳为1.8×10~(-13)/s。
短句来源
     The measured results are in agreement with the theory. They are: Ga =8.0 dB, NF=2. 06 dB @ 2. 0 V,2. 2 mA;
     在2.3GHz频率点测试结果如下:Ga=80dB,NF=2.06dB/2.0V,2.2mA;
短句来源
     The measured results show that the reflectivity at 632.8 nm is no less than 95.0%, the reflectivity at 1 315 nm is no less than 99.8%, and phase retardance at 1 315 nm is 90.235°~95.586°.
     最后对该延迟镜的性能进行了测试,结果表明:对632.8 nm波长的反射率大于等于 95.0%,对 1 315 nm波长的反射率大于等于 99. 8%,位相延迟在90 235°~95.586°范围内。
短句来源
     Measured results show that the operating frequency is 3 900 MHz,output power of larger than 10 dBm and phase noise of-102 dBc/Hz@1 kHz,-128 dBc/Hz@10 kHz are achieved.
     测试结果表明:该振荡器工作频率3 900 MH z,输出功率大于10 dBm,相位噪声达到-102 dB c/H z@1 kH z; -128 dB c/H z@10 kH z。
短句来源
     The preliminary measured results are 3 × 10-13/ hour of stability and 6.5×10-13 of accuracy.
     同时,文章也给出了改进后铯束频标的初步测试结果,小时稳定度由6×10-13提高到3×10-13,准确度由2×10-12提高到6.5×10-13。
短句来源
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  实测结果
     Measured results show that the 1# antenna has a bandwidth of 12.24% centered at 2.4GHz(VSWR≤2),and the 2# 16.33% respectively.
     实测结果表明:在2.4GHz频段上,1#和2#天线分别获得了12.24%和16.33%的相对带宽(VSWR≤2)。
短句来源
     The measured results show that, the mm-wave frequency synthesizer can output signal at the frequency range of 34.5~35.5GHz with step of 10MHz, and the phase noise performances in the above frequency range are better than –82.7dBc/Hz@1kHz and –83.8dBc/Hz@10kHz.
     实测结果表明,毫米波频率合成源输出信号可在34.5~35.5GHz 的频率范围内以10MHz 的步进频率变化,在整个输出信号频率范围内,相位噪声指标优于-82.7dBc/Hz@1kHz 和-83.8dBc/Hz@10kHz。
短句来源
     The measured results showed that the relative prediction error was ≤3.2%.
     实测结果表明,模型的相对预报误差≤3.2%。
短句来源
     The example shows that terminal temperature(293.15 K) and vacuum degree(0.01514 Pa) could be measured by the method as KNO_3 solution consisted of NO~-_3(26.85%),Cl~-(13.35%),NH~+_4(7.79%),and the measured results were almost identical with experimental results.
     实例验证出当硝酸钾溶液质量分数组成为26.85%NO3-、13.35%C l-、7.79%NH4+时,计算出真空冷却结晶终点温度为293.15 K,结晶真空度为0.015 14 Pa,与实测结果几乎一致。
短句来源
     A practical 1.3μm and 34Mb/s receiver designed by this method and the measured results are presented.
     文中给出了用本方法设计的1.3μm、34Mb/s光接收机的设计实例和实测结果
短句来源
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  测定结果
     From the measured results, the bowing parameters for E_1 and E_1+Δ_1 are 0.752 eV and 0.723 eV, respectively.
     由测定结果,得到对E_1和E_1+△_1的弯曲参数分别为0.752eV和0.723eV。
短句来源
     The quality standard isthat the percentage error of measured values must be under 10%, 66.29% of 89 measured results were up to the standard.
     以测定结果的误差百分率在±10%以内为合格标准,89份测定结果中总合格率为66.29%。
短句来源
     Finally, measured results of thermal-conductivity (20-280 K) of polyurethane foam are given.
     最后给出了聚氨酯泡沫塑料20~280K范围内的热导率测定结果.
短句来源
     Influence of Purification of 4 - AAP on Measured Results of Volatile Phenols in Water
     4-AAP纯度对水中挥发酚类测定结果的影响
短句来源
     Chlorhexidine content in solution was measured by high performance liquid chromatography at 253 nm wavelength at which chlorhexidine has characteristic absorption peak and there is minimal interference For the solution containing chlorhexidine ≤0 4222 mg/ml, the deviation of measured results was ≤1 4%
     用高效液相色谱法 ,于氯己定有特征吸收峰且干扰较小的 2 53nm波长下测定溶液中氯己定含量。 对氯己定含量≤ 0 4 2 2 2mg/ml的溶液 ,测定结果的相对偏差≤ 1 4 %。
短句来源
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  measured results
Practical circuits are fabricated, and the measured results agree well with the simulated results.
      
The measured results show that magnetostriction is related to the thickness of the ribbons, and its maximum value, -2100 ppm, has been obtained in the ribbon with a thickness of 75 μm.
      
The formulas for calculating visibility with this method and analysing the effect of non-black object on measured results have also been derived.
      
The calculated pressure coefficient and temperature coefficient of ultrasonic velocity are in good agreement with the measured results.
      
The measured results of ultra micro centrifugal compressors are shown.
      
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Summary The efficiency of thermistor mount is defined as the ratio of power absorbed by thermistor to the total input power in mount.Because of losses caused by waveguide wall,casing of thermistor and poor contact etc,the efficiency is always less than one hundred percent. Determination of efficiency of thermistor mounts prossessed practical importance for the error analysis and calibration of powermeter.It is also important for the research or improvement of thermistor mounts. After the publication of first...

Summary The efficiency of thermistor mount is defined as the ratio of power absorbed by thermistor to the total input power in mount.Because of losses caused by waveguide wall,casing of thermistor and poor contact etc,the efficiency is always less than one hundred percent. Determination of efficiency of thermistor mounts prossessed practical importance for the error analysis and calibration of powermeter.It is also important for the research or improvement of thermistor mounts. After the publication of first paper concerning the method of measurement due to Kerns in 1949,fine papers have been published successively in foreign periodicals up to 1961.This paper reviews in general the fundamental tocory and methods of measurement,and then derives an expression used to calculate the efficiency in terms of input impedance at voltage minimum.In the formula there is advantage of simplioity in measurement and computation of efficiency.The curves of input impedance at voltage minimum with respect to thermistor impedance are in complete agreement with approximate straight lines given by Ginzton. In this paper measured results have been tabulated for the efficiency of tuned thermistor mount in X-band.The results based on different methods have been compared one another.At the end of the paper the restrictions of application of different methods are discussed and the topics to be considered further are suggested,

热敏电阻接头的效率定义为热敏电阻吸收的功率和实际输入到接头的功率之比。由于热敏电阻接头内部不可避免地存在壁损耗,接触损耗和热敏电阻的玻壳损耗等。这个效率不能达到百分之一百。测定热敏电阻接头的效率对于功率计的误差分析及梭准,热敏电阻接头的研制和改进具有重要的实际意义。自1949年Kerns提出这一个问题以来,至1961年止,国外曾先后发表了五篇有关文献,介绍了五种不同的测量或计算方法。本文首先综述了它们的理论基础,介绍了各种测量方法,并在此基础上导出了利用热敏电阻为某一阻值时接头输入端的节点阻抗值直接计算效率的公式。由此公式,不仅得到一种简单的测量和计算方法,而且由公式作出的输入端节点阻抗-热敏电阻阻值曲线符合Ginzton提出的近似直线性。文中列出了用五种不同方法测试三厘米可调谐波导式热敏电阻接头的效率的实验结果,并从实验和计算两方面比较了这些方法的优劣之处。最后,对这些方法的应用以及有待进一步研究的若干问题提出了粗浅的建议。

Measurements of electrical properties using the Van der Pauw technique have been made on the n-type and p-type silicon carbide single crystals and epitaxial layer having resistivity from 10-3 to 102 ohm-cm. Experiments on the selection of measuring conditions and comparison between the Van der Pauw method and the conventional method have been performed. It is found that the magnitude and stability of contact resistance greatly affect the measuring results. Among the pressure contacts studied, indium...

Measurements of electrical properties using the Van der Pauw technique have been made on the n-type and p-type silicon carbide single crystals and epitaxial layer having resistivity from 10-3 to 102 ohm-cm. Experiments on the selection of measuring conditions and comparison between the Van der Pauw method and the conventional method have been performed. It is found that the magnitude and stability of contact resistance greatly affect the measuring results. Among the pressure contacts studied, indium contact has the lowest contact resistance, while copper, tin, and phosphor-bronze contacts must be electrically formed before use. With different electrode materials and sample currents, the deviation of values obtained is about 2%. It is suggested that the sample current should be chosen in accordance with the resistivity and contact resistance of the specific sample. As compared with the conventional method, the Van der Pauw method can give higher precision and reproducibility. High temperature electrical properties of silicon carbide single crystals have been measured in a temperature range from room temperature to 1000 K, and the ionization energy of nitrogen donors is found to be 0.056 eV. Anomalous phenomena that result in experimental errors and their origins are discussed.

应用范德保法测量了电阻率在10~(-3)—10~2欧姆·厘米范围的n型和p型碳化硅单晶和外延层的电学性质。进行了测定条件的选择,范德保法与普通法的对照等试验。发现接触电阻的大小和稳定程度对测量结果有极大的影响。在铟、紫铜、锡、磷铜等机械接触中,铟电极具有最低的接触电阻,其他电极须经电冶成方能进行测定。在不同的电极材料和样品电流下,电阻率偏离约2%,指出,样品电流应当根据具体样品的电阻率和接触电阻加以选择。与普通法比较,范德保法精确度高,数据重复性好。测量了自室温至1000°k范围内碳化硅单晶的高温电学性质,求得氮施主的电离能为0.056电子伏。讨论了引起实验误差的一些异常现象及其产生原因。

The electromagnetic impulse sound-source is a novel device which is capable of radiating high-power wide-band sound pulse with good repetition. In this paper, the functional principle of this device is first analysed from the viewpoint of circuits, and working formulas are obtained for designing such device. The circuitry and construction of a 1000-joule sound-source system are described. The measured results of the sound-source are given, which are in agreement with the theoretical results.

电磁脉冲声源是一种能够重复辐射强功率宽频带声脉冲的新型设备.本文从电路的观点出发,分析了这种设备的作用原理,导出一些较实用的计算公式.文中叙述了能量为一千焦耳的声源系统的线路和结构,并给出声源性能的测试结果.

 
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