查询词典 radio-frequency spectrum

Two different models of Power Spectrum, namely Kanai-Tajimi spectrum and its modified spectrum by Clough and Penzien, are discussed. The latter is more reasonable.

五、讨论了工程上两个常用的功率谱模型，即Kanai-Tajimi谱和Clough-Penzien修正的Kanai-Tajimi谱，说明后者更为合理。

The digital analysis of the three standard samples of the Al-based alloy with different content of Cu, and the probe into the quantitative analysis that employs the spectrums of Cu 510.55 nm and Fe 510.75 nm as the analysis spectrum and comparison spectrum, indicate the positive relationship between the content of copper and the intensity ratio of the analysis and comparison of spectrum.

对3种不同Cu元素含量的铝合金标准样品进行数字化分析测定，探索选用Cu 510.55nm谱线和Fe 510.75nm谱线分别作为分析谱线和比较谱线进行定量测定的方法，数据显示分析谱线和比较谱线的强度比值与Cu元素含量呈正比关系。

The digital analysis of the six standard samples of the Al-based alloy with different content of Cd, and the probe into the quantitative analysis that employs the spectrums of Cd 508.5 nm as the analysis spectrum, Cu510. 55 nm and Fe510.75 nm as comparison spectrum separately, indicate the positive relationship between the content of cadmium and the intensity ratio of the analysis and comparison of spectrum.

对6种不同Cd元素含量的铝合金标准样品进行了数字化分析测定，探索了选用Cd 508.58nm谱线作为分析谱线，分别选用Cu510.55nm和Fe510.75nm谱线作为比较谱线进行定量测定的方法，数据显示分析谱线和比较谱线的强度比值与Cd元素含量成正比关系。

The visible spectrum of Mo in Ti-based alloy was analyzed by a digital spectroscope. Mo 553.31nm and Ti 551.44nm were selected as spectral lines for analysis and comparison. Samples of Ti-based alloys with different Mo contents were analyzed quantitatively. The data indicated that the ratio of intensities between analytical spectrum and comparison spectrum has a positive relationship with the content of Mo.

使用数字化看谱镜对钛合金中钼元素可见光谱进行了分析测定，选用M0553.31nm和Ti551.44nm作为分析谱线和比较谱线，对不同Mo元素含量的钛合金样品进行了定量分析探索，数据显示分析谱线和比较谱线的强度比值与Mo元素含量成正比关系。

Functions include wave form addition, wave form subtraction, Lissajous Pattern display, transient signal recording, RMSamplitude spectrum display, relative amplitude spectrum display, phase spectrum display, auto correlation coefficient display, cross correlation coefficient display, function generation, and multi-tone generation.

功能包括音形叠加，音形结构，Lissajous Pattern 显示，暂时信号记录，RMS 声谱振幅显示，相关声谱振幅显示，自动相关系数显示，交错相关系数显示，函数生成以及多声音生成。

The feature extraction methods of LOFAR spectrum, envelop spectrum and waveform structure are studied. Based on the study of third order cummulant, the feature extraction method of diagonal slide spectrum is presented.

研究了水下目标辐射噪声信号的LOFAR谱特征、包络谱特征、波形结构特征提取方法，在对三阶累积量的性质进行分析的基础上，提出了三阶累积量对角切片谱特征的提取方法。

Then select the very surfactants\' concentration to treat SBP for one hour, scan on the circular dichromatism spectrum and fluorescent spectrum; ultraviolet-visible spectrum scans SBP\'s variations within 2h after surfactants\' adding to immediately.

实验前加适量相应缓冲液溶解使SBP浓度为250mg/ml.30℃下，设置三种表面活性剂的浓度梯度，使得每种表活剂的加入使得SBP酶活力变化，并在某一特定浓度和特定时间残留酶活力稳定。

The traditional object of electronic and atomic collision studies is a total or differential cross section. People analyse the structure information of target atom through the spectrum, the energy spectrum or the momentum spectrum.

传统的电子原子碰撞实验，主要是通过碰撞截面测量和计算来获取碰撞过程的信息，通过光谱、能谱或动量谱来分析靶结构信息。

Discrete spectrum existed in power spectrum of output single are weaken and the power spectrum become consecutive because of using randomized modulation.

随机调制技术较好地减小了输出信号中的离散功率谱，使输出信号的功率谱趋于连续。

The emission spectrum consisted of continuous spectrum background and discrete spectrum above the background.

等离子体发射光谱呈现连续谱背景迭加分立谱的形式。

The use of the web to spread fears that flicking the switch on the LHC could create a Black Hole that could swallow up the Earth particularly concerned him, he said.

他说，使用互联网散布恐慌说启动LHC会生成一个可能吞噬地球的黑洞的做法让他感到忧虑。

Not a single word have I written down.

我一个字也没有写下来。