Finally, SINAD (signal-to-noise and distortion) is the ratio of the fundamental input signal`s rms amplitude to the rms sum of all other spectral components below half of the sampling frequency, excluding dc.
最后，SINAD（信号与噪声＋失真比定义为信号基波输入的RMS值与在半采样频率之下其它谐波成分RMS值之和的比值，但不包括直流信号。
An overview of Rubiaceae commonly used medicinal plants in 28 kinds of triterpenoid components and spectral characteristics of the structure.
综述了茜草科常用药用植物中28种三萜类成分的结构及其波谱特征。
In this criterion the comprehensive effect of transient components of zero-sequence voltage and the third harmonic voltage is considered, and the ratio of spectral energy of restraint signal to that of operation signal is taken as restraint coefficient.
分析了发电机机端和中性点的零序基波及3次谐波电压故障暂态分量的特点，在此基础上提出了发电机定子绕组单相接地保护的自适应判据。
The biochemical components of the hibernating urine was analyzed with spectral photometry, spectral fluorometry, liquid chromatography, and some characteristics relating to longevity were recognized: 1 A special anti-oxidative stress system: The hibernating urine remained antioxidative capability for over a dozen hours in vitro, and the concentration of lipid peroxides and age pigment-like substances were remarkably low. 2 Several kinds of anti-stress enzymes and antioxidants were observed in urine and serum. The activity of lactate dehydrogenase and creatine kinase in serum were particularly high, reaching 2321 molL and 4524 mol/L, respectively. Antioxidative uric acid was low in serum but highly enriched in hibernating urine. 3 In contrast to normal tortoise, free amino acids in hibernating urine was greatly changed.
用荧光、紫外、全自动生化分析和液相色谱进一步分析冬眠乌龟体液和尿液中的生化成分，发现了一些与长寿密切相关的特点：1、具有独特的抗氧化特性：冬眠状态乌龟尿液在体外十几个小时内有抗氧化功效；冬眠乌龟尿液中脂过氧化物水平和老年色素类代谢垃圾物质水平都很低。2、冬眠乌龟尿液和血清中都含有多种有特殊功效的生物酶类和抗氧化物质：例如，血清中乳酸脱氢酶和肌酸激酶含量特别高，分别达2321 mol/L和4524 mol/L；抗氧化剂尿酸在血清中浓度较低，而在尿液中浓度大大提高。3、与正常乌龟相比，冬眠状态乌龟尿液中游离氨基酸成分发生了较大的变化。
Physics extremely fine or thin, as in a spectral line split into two or more components.
非常细或薄，象在光谱线内可以分成两个或多个的成分。
The oily substances and the acidic components were characterized using elementary analysis, IR spectral analyses and acidimetry.
采用石油醚和三氯甲烷分级萃取孤岛油田含聚污水中的油分，得到两个不同极性的组分F1和F2；用碱抽提法从酸值较高的F2组分中分离酸性物质并将其甲酯化，通过柱层析法将甲酯化物分成Ⅰ、Ⅱ和Ⅲ三个甲酯组分。
The physical characteristics, mineral components, chemical components on sides separated less than 200 mesh and the differences of their interface physical and chemical characteristics of coals and pyrite sulfur in sample coals were studied by the means of Fourier Transform Infrared Spectrometry, X-ray Diffraction, Electron Energy Spectral-Mete r and Scanning Electron Mirror.
选择具有代表性的高硫煤(山东兖州煤与重庆南桐煤)为研究对象，通过深度解离(-200目以下)，采用红外光谱、X-射线衍射、电子能谱仪、扫描电镜等表征手段对两种煤中煤和黄铁矿硫的物理性质、矿物成分及解离面的表面化学组成、界面物理化学特性差异进行分析。
By means of spectral analysis method, the problem of dynamic loads acting on the load-carring components of rear bogie suspension system of a truck is analysed in this paper.
本文采用功率谱分析法讨论了作用在三轴汽车平衡悬挂承载部件上的动载荷问题。
In this paper, the components and working theory of Infrared Spectral Radiometer are introduced, and the signal processing method in the IRSR is analyzed.
文摘：介绍了红外光谱辐射计的组成及工作原理，分析了其信号处理方法。
The spectral envelope of noise radiated from underwater acoustic targets consists of modulation line components (DEMON). Based on the fact that different types of acoustic targets have different DEMON spectra, detection ability of single vector sensor with a DEMON spectrum is studied.
水声目标辐射噪声的包络谱中包含调制线谱（DEMON），不同类型的水声目标其DEMON谱不同，研究单矢量传感器利用DEMON谱检测目标信号的能力。
We compare the spectral decomposition estimate by the analysis of variance estimate in the linear mixed model with two variance components.
考虑含有两个方差分量矩阵的多元混合模型，将一元混合模型下的谱分解估计推广到多元模型下。
The study indicated that PIS had extensive application potentiality on detecting spectral information of crop components in the micro-scale.
研究表明，成像光谱仪在微观尺度上的作物组分光谱信息探测方面具有较大的应用潜力。
SPCA arithmetic has smaller number of spectral principal components and greater variance contribution than PCA by choosing proper kernel functions and parameters.
当选取合适的核函数和参数时，谱主成分的个数比主成分的个数要小且累积方差贡献率要大。
Beyond Verbal, the company behind the Moodies smartphone app, says its software analyzes speech components like timing, energy, frequency and spectral content to produce data that can then be run through its algorithms.
推出Moodies应用的BeyondVerbal公司说，该软件通过分析节奏、能量、频率和频谱内容等语音成分来生成数据，然后用自己的算法来进行加工。
Spectral Property and Fluorimetric Analysis of Active Components of Chinese Medicine Fructus Arctii, Rhizoma Menispermi
中药牛蒡子、北豆根活性成分的光谱性质及荧光分析法研究
The two components have identical vertical structure and physical process. The global spectral model component uses spherical harmonics as horizontal basis functions.
这两部分采用相同的垂直结构和物理过程，都用球谐函数作为水平基本函数。
And analysis of components property and test result for the flash spectral measurement system.
本文综述了闪光灯光谱分布指数SDI值的计算方法，并对闪光光谱测试系统的组成、性能及测试结果进行了介绍与分析。
Mehtods The methods of chemical identification, spectral analysis and colorimetry were used to assay the chemical components and extracts of Rhinacanthus Nasutus.
方法采用化学鉴别、光谱分析及比色法等方法，对白鹤灵芝的化学成分进行分析及浸出物含量测定。
To solve the problem of the inherent ill-posed problem of multi-events ERP components decomposition algorithm, we introduced Wiener deconvolution to regularize the ill-posed problem, and then designed the optimal filter to recover event related components by estimating signal and noise power spectral.
针对分解算法中固有的病态问题，采用维纳去卷积理论，通过估计信号和噪声的功率谱来确定最优滤波器的设计。
The ideal self-induced transparency disappears for 2 π pulse, and second harmonic spectral components occur significantly due to the two-photon absorption process.
对于2π脉冲，理想的自感应透明现象消失，出现了明显的二次谐波成分，其原因在于发生了双光子吸收过程。