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first differential
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  一阶微分
     Integral Kinds of the Variable Coefficient First Differential Equation
     关于变系数一阶微分方程的几个可积类型
短句来源
     By means of Leray-Schauder fixed point theorems for set-alued maps are given,two existence results on the initial value problem for first differential inclusions and on the boundary problem for second differential inclusions are obtained.
     应用集值的Leray—Schauder不动点定理,获得了一阶微分包含初值问题和二阶微分包含边值问题的解的存在性定理.
短句来源
     In this paper,the theory 1 1 of is studied and popularized of great value,and the calculated methods for more first differential equations are studied with it.
     对文献 [1]定理 1 1 进行了有价值的研究和推广 ,并利用它对更广泛的一类一阶微分方程的求解进行了研究
短句来源
     In this paper, the author discusses the existence and the montone iterative technique of the solutions for terminal value problems of first differential equations in Banach space, if the one-sided condition of Lipschitiz, f(t, u)-f(t, u) ≤ N(i) (u - u), u≥u, or f(t, u)-f(i, u) ≥ N(i) (u - u), u ≥ u, is satisfied.
     本文讨论了Banach空间中一阶微分方程的终值问题u′=f(t,u),u(∞)=u_∞在分别满足两个不同方向的单边Lipshitz条件下解的存在性与单调迭代技巧。
短句来源
     The data of NIR spectra, total sugar, reducing sugar and total nicotine from 198 tobacco samples were processed by four different data pre-processing approaches, baseline correction, decongvolution, first differential and second differential, and two different statistic methods, principle component regression (PCR) and partial least square (PLS). The respective NIR calibration models for total sugar, reducing sugar and total nicotine in tobacco were developed and the regressive parameters of those models were compared.
     采用基线校正、去卷枳、一阶微分、二阶微分、主成分回归(PCR)和偏最小二乘(PLS)法对198个烟叶样品的近红外光谱和总糖、还原糖、总烟碱含量数据进行了处理,建立了相应的总糖、还原糖和总烟碱校正模型,并将这些模型的回归参数作了比较。
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  “first differential”译为未确定词的双语例句
     The peak potential is -0.82 V(vs.SCE) at first differential polarograph. The liner relationship between peak current and concentration of Eu(Ⅲ) is found in the range of 1.010~(-7)~8.010~(-6) mol/L. The limit of detection is 9.010~(-8) mol/L.
     在pH10.2的NH3-NH4Cl缓冲介质中,Eu(Ⅲ)-钙试剂络合物在-0.82V(vs.SCE)处有一灵敏的导数极谱波,其峰电流与Eu(Ⅲ)的浓度在1.0×10-7~8.0×10-6mol/L范围内呈线性关系,检出限为9.0×10-8mol/L。
短句来源
     The first differential coefficient reaches negative significant level at 0.01 in blue edge range from 490 to 550 nm and the former part of red edge from 680 to 717 nm, positive significant level at 0.01 in yellow edge range from 557 to 668 nm and the latter part of red edge from 717 to 797 nm.
     557-668nm的黄边、717-797nm红边的后半部分达到0.01的极显著正相关水平。
短句来源
     Application of First Differential Grouping Method Based on the Dynamic Linear Regression in Thread Testing
     基于动态线性回归的—阶导数分段法在螺纹检测数据处理中的应用
短句来源
     The Deborah Number,N_(De),is a rheologic characteristic of the viscoelasticity of a fluid and can be determined from experimental data of its first differential normal stress,τ_(11)-τ_(22),which,however,is too little to be measured by an ordinary rheome- ter for dilute polymer solutions.
     德博拉数(N_Dc)是表征流体粘弹性的流变参数,可由实验测得的流体第一法向应力差■求出。 但聚合物稀溶液的■数值太小,在一般流变仪上测不出。
短句来源
     (3) The analyzing method based on the variables of spectral position of "red edge" of cotton leaves, derived from the first differential spectral data, reveals that the change extent, shape and area of the "red edge" contain the information of various wavebands, and the capability of predicting N nutrient in cotton leaves and canopies can be provided by using the developed model based on the variables from these wavebands;
     3由一阶微分光谱衍生出基于光谱"红边"位置变量的分析方法,使我们认识到"红边"的变幅、形状和面积包含了各个波段的信息,这些波段综合产生的变量所构造的模型,为棉花氮素营养参数的估计提供了预测能力;
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  first differential
The first differential complex is an analogue of the de Rham complex.
      
The first differential approximation to finite-difference schemes for hyperbolic systems of equations
      
A variational principle is found which is of a first differential order and, contrary to the standard variational derivation of the Dirac equation, does not lead to any second type of constraints.
      
By factorizing the d'Alembertian operator into Dirac matrices, the Dirac equation in its original first differential form is obtained from the Evans wave equation.
      
The ionization efficiency data have been treated by the inverse convolution first differential technique.
      
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The study of left ventricular performance in 100 children with congenital heart defects (TF, VSD, ASD and PDA) was carried out by the first differential admittance cardiogram, ECG, PCG and CAP recorded simultaneously. The results suggested that STI indices measured by admittance cardiogram and mechanocard-iogram exhibite significant correlation, and the actual values be closely approximate. Left ventricular performance measured by admittance cardiogram was consistent with clinical heart function in congenital...

The study of left ventricular performance in 100 children with congenital heart defects (TF, VSD, ASD and PDA) was carried out by the first differential admittance cardiogram, ECG, PCG and CAP recorded simultaneously. The results suggested that STI indices measured by admittance cardiogram and mechanocard-iogram exhibite significant correlation, and the actual values be closely approximate. Left ventricular performance measured by admittance cardiogram was consistent with clinical heart function in congenital heart defects. Analysis of multiple factors stepwise regression showed that changes of hemodynamics and pathologic malformation in TF existed a different influence to some parameters of left ventricular performance.

对100例TF、VSD、ASD和PDA等先心病患儿,用心导纳一阶微分图与心机械图同步测定的收缩时间间期各指标都有非常密切相关,实测数值十分接近。心导纳图测定的左心功能诸指标的改变与临床心功能分级相符。本文还用电子计算机作多因素逐步回归初步探讨了TF血流动力学变化和病理畸形对左心功能诸参数的影响程度和相互关系。

In this paper, the author discusses the existence and the montone iterative technique of the solutions for terminal value problems of first differential equations in Banach space, if the one-sided condition of Lipschitiz, f(t, u)-f(t, u) ≤ N(i) (u - u), u≥u, or f(t, u)-f(i, u) ≥ N(i) (u - u), u ≥ u, is satisfied.

本文讨论了Banach空间中一阶微分方程的终值问题u′=f(t,u),u(∞)=u_∞在分别满足两个不同方向的单边Lipshitz条件下解的存在性与单调迭代技巧。

In this paper, Riccati transfer matrix method and the component theory of forward and backward whirls are used to the eigenproblem of damped free whirling vibration of a flexible rotor with arbitrily distributed mass on isotropic or anisotropic supports regarding gyroscopic effects to find out its critical speeds and corresponding vibrational shape functions. The generalized damped mode theory is employed in combination with Bogoliubov-Mitropolskii asymptotic method to deduce twe systems of the first differential...

In this paper, Riccati transfer matrix method and the component theory of forward and backward whirls are used to the eigenproblem of damped free whirling vibration of a flexible rotor with arbitrily distributed mass on isotropic or anisotropic supports regarding gyroscopic effects to find out its critical speeds and corresponding vibrational shape functions. The generalized damped mode theory is employed in combination with Bogoliubov-Mitropolskii asymptotic method to deduce twe systems of the first differential equations which are numerically integrated to compute transient responses of the rotor passing through its critical speeds in cases of forward whirl and backward whirl respectively with limited power supply. At the same time, the nonlinear and non-stationary vibration of the rotor through two neighboring critical speeds with coupling is solved.

本文首先将Riccati传递矩阵法和正、逆回旋运动分解理论应用于有阻尼的分布质量转子的复特征问题计算,求出系统各阶正、逆回旋临界速度(也称临界点)及相应报型然后作者对广义阻尼模态理论作了引伸和发展,结合Bogoliubov-Mitropolakii渐近法,建立起一阶微分方程组,计算不平衡柔性转子分别在正、逆回旋下通过各阶临界点的非线性、非定常瞬态响应,还深入分析了转子相继通过两十分邻近的临界点时发生的耩合现象.

 
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