基本曲线

The reluctivity of reactor is controlled by accessional DC current which is got by commutating the net voltage through thyristors. In this system, we control the size of accensional DC current through changing the bust-angle of thyristor.

首先，详细分析了磁控电抗器的电路结构和基本工作原理，阐诉了铁磁材料的磁化特性、磁控电抗器铁芯的动态磁化曲线特性的基础上，给出了磁控电抗器的通用数学模型，并对磁控电抗器各工作状态之间的转换进行了详细地分析。

Objectives. To derive a smooth mathematical function representing the sagittal spinal curve from individual vertebral elements. To generate normative data using this model.

目的。从独立的椎体的矢状椎体曲线数据中获得一种能彻底表现其功能的数学模型，并且通过这种模型，我们可以模拟它的最基本的特征。

Based on the theory of least square method,combined with small residual sum of squares and large residual sum of squares,applied with the method of finite difference ,a new algorithm can be concluded .

从最小二乘法基本原理出发，结合大余量算法和小余量算法，运用有限差分的求导方法来求解Hessian矩阵，来推导试井分析中曲线自动拟合的新算法。

This paper introduce the primary and some relevant definition of RO...

本文首先介绍ROC 曲线及其相关的基本概念及其特性。

The water-level curves from 20 tide-gauge stations along the coasts of Bohai and Yellow Seas were collected.The seiche parameters were selected according to these water-level curves obtained.

基于港湾假潮振动的基本原理，从渤海、黄海沿岸 2 0个验潮站多年水位自记曲线资料获取假潮参数，并对其做了统计分析，给出了假潮的统计特征，还讨论了假潮形成的初步原因。

An engineering procedure for estimating crack growth behavior and fatigue lives of semielliptical surface cracks at weld toe s in complex stress fields was proposed based on a database of stress intensity factors and the elementary modes method developed by author.

以作者建立的焊趾半椭圆表面裂纹应力强度因子数据库以及复杂应力场中焊趾半椭圆表面裂纹前缘应力强度因子分布计算的基本模式法为基础，给出了复杂应力场中焊趾表面裂纹在疲劳扩展过程中形态变化规律及寿命的工程分析方法；并用这个方法计算了一些典型焊接接头在一些典型的外加应力场和残余应力场中的裂纹形态发展曲线。

Cell grew slowly in 48 hours, and spindle and polygon-shaped cells were observed after 72 hours.②The growth curves of MSCs in C/GP were shown as a sigmoidal shape.

绘制MSCs生长曲线为"S"形，第1个24 h为细胞潜伏适应期，第2~3个24 h为对数生长期，4 d后细胞增殖减慢，5 d后细胞基本停止生长。

Its a simple graph - it keeps track of all the tones in a photograph, from dark to light.

她是一条包含从暗到明基本色调信息的简单曲线。

Then, we formulated the simultaneous differential equations and the car following theory which explain the urbanization motion track and these two kinds of process. The case study using the regression analysis to construct and verify the modal analyzes the regular pattern of urbanization and differences of development among twelve urban land readjustment areas in Tainan.

其次，提出具有数学意义的建地化、市街化基本原理，据此建立联立微分方程式，并且使用「跟车理论」的物理决定论类推说明市街化曲线模型，以把握市街化运动的具体法则；并以台南市12个重划区为实证地区，利用回归分析方法来进行模式校估及检定，俾利於分析市街化之规律性及各地区之发展差异。

The content included (1) characterizing macropres shapes;(2) obtaining the index to charaterizing soil macropore quantificationally through digitalizing and analysising the photo of soil section;(3) comparing the shapes of macropores among soils, which reasons were discussed;(4) studying the influence of the zonal diversity, soil depth and land utilization on macropore characeristics;(5) estimating the space variability of macropore in the microscale using spore variability index;(6) analysising the connectivity and sinuosity of macropore using preferential flow breakthrough curve;(7) discussing the feasibility of indicating the preferential flow degree using macroporosity and macropore perimeter.

系统划分了大孔隙类型；描述了大孔隙形态；通过对土壤切片图像数字化处理和分析，获得了描述大孔隙特征的两个基本指标：大孔隙度和周长，并对大孔隙进行了定量化地描述；比较了各土类之间大孔隙的形态差异，从土壤发生学的角度对其原因进行了分析；研究了地带性差异、土壤层次和土地利用方式对大孔隙特征的影响；阐明了小尺度范围大孔隙的空间分布特征；结合Br〓标记优先水流穿透曲线分析了大孔隙的连通性和弯曲性，探讨大孔隙形态指标评价大孔隙优先水流作用强弱的可行性。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。