first-order derivative
英 [fɜːst ˈɔːdə(r) dɪˈrɪvətɪv]
美 [fɜːrst ˈɔːrdər dɪˈrɪvətɪv]
网络 一阶导数; 一阶微分
双语例句
- Besides, for the first-order derivative of Gaussian pulse, the transmission distance can reach 110 meters at emission power of 3.8 mW and 20 Mbps.
对于一阶高斯波形，增加发射功率到3.8mW时，在20Mbps下，传输距离可以达到110m。 - We combine the time resolution technology as well as photoacoustic spectroscopy technology into the designing of an experimental system which takes He-Ne laser as its light source and carbon as its sample. Experiments indicate that the system is able to realize the first-order derivative photoacoustic spectroscopy successfully.
结合时间分辨技术和光声光谱技术，设计加工了一套实验系统，用氦氖激光为光源，碳黑为样品，通过实验证明了该系统可以准确实现光声光谱的一阶导数光谱。 - This paper combines the physical theory of Ronchi test with synchronous phase detection method, derives the first-order derivative of a large wavefront aberration or an aspheric wavefrout ( W/ x, W/ y).
将朗奇检验的物理原理与同步位相探测技术结合，求出对应于大量值波差或非球面波差函数的一阶导数（？）W/（？） - Experiments are performed on a three peaks pulse signal using Gaussian first-order derivative and second-order derivative wavelet transforms.
用高斯一阶导数和二阶导数小波变换分别对单周期三峰脉象信号进行了实验。 - Determination of Avermectin B_1 Content by First-order Derivative Spectrum Analysis
一阶导数光谱法测定阿维菌素B1的含量 - The canonic OC expansion of the first-order Boolean partial derivative of the OC type logic function was discussed.
讨论了OC型逻辑函数一阶布尔偏导数的规范OC展开式。 - In the canonical ensemble, the free energy of the spin system is continuous all the time, but its first-order derivative, namely the entropy, has a discontinuous point in the effective temperature area;
在正则系综描述下，自旋系统的自由能始终连续，而自由能的一级偏导数（即熵）在有效温度区域内始终存在一个不连续点，因此，谣言系统内存在一级相变； - Adopting the first-order derivative strategies to modify synaptic weights of the basic Elman networks may result in bad stability of context units.
基本Elman网络采用一阶导数形式的权值修正方法会导致结构单元连接权的稳定性变差。 - Use of first-order derivative UV spectroscopy in monitoring the percutaneous absorption of piroxicam in vitro
一阶导数紫外光谱法测定炎痛喜康透皮速率 - Time-fractional order reaction-diffusion equation was considered, which obtained from the standard reaction-diffusion equation by replacing the first-order time derivative by a fractional derivation of order α( 0 < α < 1).
考虑时间分数阶反应-扩散方程，它是从标准的反应-扩散方程中用分数阶导数α（0<α<1）代替一阶时间导数而得到。 - Determination of dexamethasone sodium phosphate in paint by first-order derivative spectrophotometry
一阶导数光谱法测定地塞米松磷酸钠涂剂的含量 - Based on it, the tabular methods calculating the first-order and second-order Boolean partial derivative of the OC type logic function were proposed.
在此基础上提出了计算OC型逻辑函数一阶、二阶布尔偏导数的表格方法。 - Necessary and Sufficient Conditions for Oscillations of Second-order Neutral Equations with First-order Derivative Terms and Several Delays
带一阶导数项多滞量二阶中立型方程解的振动的充要条件 - The first-order derivative equal to zero of total potential energy with respect to the relative shear deformation of shear band leads to the equilibrium condition of elastic rock.
将系统的总势能对相对剪切变形求一阶导数（等于零），得到了弹性岩石的平衡条件。 - Robust impulse-eliminating of the systems with uncertainty in the first-order derivative coefficient matrix is focused in this paper.
重点研究对于导数项系数矩阵带有扰动的广义系统的鲁棒消脉冲问题。 - The status of the development about robust control on the uncertain singular systems is briefly described. ( 2) This paper focuses on the theory of regional pole analysis and constraints of the systems with uncertainty in the first-order derivative coefficient matrix.
概述不确定广义系统的鲁棒控制研究现状。（2）针对导数项系数矩阵带有扰动的广义系统进行圆盘极点分析和圆盘极点配置研究。 - Calculation of first-order derivative is the same with the calculation in solving Euler equations.
在求解N-S方程时，其一阶导数的计算方法和求解Euler方程时一阶导数的计算方法完全相同。 - Based on first-order derivative matrixes, the second-order derivative matrixes of flow through pipes and pressure heads at nodes to flow-resistance characteristic coefficients of pipes are deduced firstly.
首先在热网管段流量和节点压力对管段阻力数的一阶导数矩阵基础上，推导出二阶导数矩阵的表达式。