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Three-phase sources have three Q terminals called the line terminals(a, b,c). + Neutral connection--n an b+V n bn Balanced three-phase sources may
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4.1 1D-Array 1. One-dimensional array 1D-array is a limited sequence composed of n (n20) elements which are of the same data type. For example:
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第一节n阶行列式的定义 一、二阶行列式 给定a、b、c、d四个复数,称
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A new type of Si3N4 ceramics (ZAN) is developed in our laboratory. Densification of ZAN is promoted by non-toxic, non-oxide AZ-type additives. In this work high temperature (HT) properties and microstructures of ZAN are investigated
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BIBO Stability Condition - A discrete-time LTI system is BIBO stable if the output sequence {y[n]} remains bounded for any bounded input sequence{x[n]}
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Types of chemotaxins – C5a attracts neutrophils and monocytes – Made by bacteria Peptide clipped off N-terminus (beginning with N￾formylmethionine) during peptide maturation after protein synthesis
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Plant nitrogen 1.1 Uptake of N 1. N is required by plants in large amounts Most plant material contains 2-4%N and 40%C. 2. N is usually the limiting nutrient in unfertilized systems 3. Most n is taken up from the soil in the form of nht or no a small amount of NH3 can be absorbed through the leaves N2 can be used by legume plant via biological nitrogen fiXation
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三维复式格子:晶体由N=N1N2N3个原胞构成,一个原胞中有n个原子。 n个原子的质量分别是:m1,m2,m3…m 第l个原胞的位置:R()=la1+l2a2+l3 原胞中各原子的位置
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41.AS a _actor,he can perform, sing, dance and play several kinds of musical instruments. A.flexible灵活的,柔韧的n.flexibility B. versatile形容人多才多艺的,形容工具用途广泛的vers代表随时可以变换的n
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一、逆幂法分析 设n阶实方阵A有n个线性无关的特征向量u12…n 相应的特征值分别为,2…n,并按其绝对值的大小排列 即 则由A1=u,可得Au1=u,即A的逆矩阵A的特征值为
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