反曲线

PRONY method can get the damping ratio of transient signals which can be used to predict and detect the early back corona failure efficiently, and this method makes up the deficiencies of ESP volt-ampere curve.

采用PRONY方法能够有效地抽取出ESP瞬态信号的阻尼因子，该阻尼因子能够有效的预诊ESP反电晕故障，弥补了ESP伏-安特性曲线以及人工判断方法的不足； 4。

Identification and forecasting for igneous rock is one hard problem of exploration activity, because it has extreme aeolotropism. By firstly synthetically utilizing seismic analysis, well logging restricted inversion, core well core and electric log analysis method and so on, the igneous rock reservoir of Gaoqing oilfield is effectively identified and divided into one to four four phases according to igneous rock erupting phase.

由于火成岩具有极强的非均质性，对其识别与预测是油气勘探的难题之一，首次综合使用地震分析、测井约束反演、取心井岩心与电测曲线分析等技术和方法，有效地识别了高青油田火成岩储集体，并根据火成岩喷发期次，将高青油田孔店组火成岩储集体分为1、2、3、4期。

The Phase I tip has simple straight swept or tapered shape, the curve change of the platform is included during Phase Ⅱ, and the geometry of the Phase Ⅲ tip is extended to anhedral modification.

第一层次的桨尖形状为直线后掠或尖削，第二层次包括桨尖平面的曲线变化，而第三层次进入到下反桨尖这种三维变化。

According as the four modes in a symmetric waveguide, that one of modes is symmetric or anti-symmetric about X axes or Y axes, are X polarized or Y polarized odd mode or even mode, we calculated the polarized coupling characteristics using Cassinian curves as boundaries of the couplers.

本文还根据对称波导中对称于或反对称于x轴或y轴的四个模式分别为x偏振或y偏振的奇模或偶模的原理，用Cassinian曲线表示耦合器介质波导的边界，计算了耦合器的偏振耦合特性。

Finally, we adopt the fault smoothing constraint and dipping angles obtained from previous two steps and invert for the coseismic rupture distribution.

建模过程经历三个步骤：（1）采用直立断层模型反演，根据解的分辨率和拟合差的折中曲线得到最优平滑约束；（2）改变断层倾角，找到使得观测数据和正演计算拟合最好的断层倾角；（3）根据前面两步得到的最优平滑约束和断层倾角求得地震同震破裂分布。

On the basis of census of all individuals of the populations at different plots, the structure and dynamics of the populations were described. The result showed that P. tabulaeformisf.shekannesis were growing populations, and the distributions of the structure were reverse J. The density decreased with the increasing of Size-class structure. The populations developed the characteristic of increasing in the early stage and stabilizing in the late. The survive curve of Pinus tabulaeformisf.shekannesis were between DeeveyⅡand DeeveyⅢ. The analysis of time sequence showed that most of the inividuals would be adult after 20 years.

结果表明：柴松种群结构呈反J分布型，种群处于增长阶段；种群的密度随径级的增加而降低，种群密度与径级呈现出明显的负相关；四个函数估计值说明柴松种群具有前期增长、后期稳定的特点，其存活曲线介于DeeveyⅡ型和DeeveyⅢ型之间；随时间推移，种群中树和大树数量逐渐增多，种群在20年后开始大量进入成熟阶段。

The research results showed that: The accuracy of dimidiate pixel model is better than that of the experiential model during the vegetation retrieval.The curve degree of the cubic curve fitting is the best during the three built experiential models, but the experiential model is very simple and used widely.

研究结果表明：植被盖度反演中，像元二分模型的精度高于经验模型的精度，在建立的三个经验模型中，又以三次拟合曲线的拟合度最高。

Of the head,center lengther lengths are shorter,outergths longer

完成的层次是layer的反头型曲线

The virtual platform is tested by experiments of measuring artificial defects in the mild steel sheet workpiece. And the results show that its functions, including signal channel controlling, signal collection, magnetical flux density curves and butterfly curve, data accessing and signal quantifying and display, can be realized by using the virtual panels; the quantifying precision of this system is about 85 percent; and the shape inversely calculated is similar to the real shape of the defect.

通过实验测试得到如下结论：对该虚拟仪器面板的操作能够有效地实现通道控制和信号采集、磁通密度曲线及蝶形图的实时绘制、数据的存取以及信号的定量计算和显示等功能；具有较高的检测精度，缺陷智能量化相对误差不超过15%；检测反演所得缺陷形状能够与缺陷的真实外形相符，满足可视化检测要求。

The free-radical addition reaction of malonic ester with a series of alkenes under the uniform conditions has been studied.

在相同反应条件下，进行一系列烯烃与丙二酸二乙酯的加成反应，求得产率与烯烃结构间的定量关系，即反S型曲线。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。