双特征的

This paper, firstly, after a deep study of image mathematical models, sets up two kinds of image models namely Laplace partial differential equation model and biharmonic equation model and then obtains the eigenvectors of image by the methods of eigenfunction expansion and boundary recurrence.

本文首先较深入地研究了图象的数学描述，提出图象的Laplace偏微分方程和双调和方程两种模型，继而采用特征函数展开法和边界递推法分别求得图象的特征矢量。

Methods— Morphologic features of ASD and VSD were demonstrated by specialized echocardiographic section using a transthoracic probe. En face views of secundumASD and perimembranous and outflow tract or doubly committed subarterial VSD were imaged with interatrial septal section and inflow and outflow interventricular septal section on parasternal or apical position, respectively.

使用特殊的超声心动图切面显示 ASD 和 VSD 的平面形态学特征，在胸骨旁或心尖位置，使用房间隔切面、流入道和流出道室间隔，分别显示继发孔型 ASD 、膜周部和流出道或双动脉干下型 VSD 的平面形态学特征。

En face views of the secundum ASD and perimembranous and outflow tract or doubly committed subarterial VSD were imaged on the interatrial septal section and inflow and outflow interventricular septal section at parasternal or apical position, respectively.

二维超声心动图常规切面诊断43例继发孔型房间隔缺损和15例室间隔缺损患者，再使用特殊的超声心动图切面显示ASD和VSD的平面形态学特征，在胸骨旁或心尖位置，使用房间隔切面、流入道和流出道室间隔，分别显示继发孔型ASD、膜周部和流出道或双动脉干下型VSD的平面形态学特征。

The features of two types 、two bilateralness and two department of modern teaching , have not only decided the big tendency of modern teaching method, but also decided the mold direction of sport teachers.

全部为DVD光盘，高清晰现代教学的双边性、双型性、及双部性特征决定了现代化教学方法的大趋势，也就决定了体育教师的塑造方向。

The invention provides a dual redundant CAN bus controller, which is arranged on a crewel CAN bus, characterized in that: two CAN bus transceiving modules, two initializing modules are respectively corresponding to the CAN bus controller module A and CAN bus controller module B; the two CAN bus controller modules are respectively connected to the two CAN bus via a driver shifting control unit; the initializing module is connected to the bus control initializing register for initializing the e CAN bus controller modules; a protocol processing module is connected to the FIFO buffer; the FIFO buffer is connected to the node processor via the logical interface; a intermitting process unit sends the corresponding intermitting control signal to the CAN bus transceiving modules according to the CAN bus controller modules; one path of the CAN bus controller module is directly connected to the protocol processing module; another path is connected to the protocol processing module via the bus receiving buffer.

本发明提供了一种双冗余CAN总线控制器，设置于双线CAN总线上，其特征在于：两个CAN总线收发模块、两个初始化模块分别与CAN总线控制器模块A和CAN总线控制器模块B相对应；两个CAN总线控制器模块通过驱动器切换控制单元分别与两条CAN总线相连；初始化模块与总线控制器初始化寄存器相连，对所对应的CAN总线控制器模块进行初始化；协议处理模块与FIFO缓存器相连；FIFO缓存器通过逻辑接口与节点处理器连接；中断处理单元根据CAN总线控制器模块的控制命令对CAN总线收发模块发出相应的中断控制信号；CAN总线收发模块一路与协议处理模块直接相连，另一路通过总线接收缓存器与协议处理模块相连。

This thesis will first explore the prototypical features of the English ditransitive verbs, and then elaborate the differences between DOC and DC, the metaphorical and metonymical mechanisms of which will, finally, be discussed and employed to account for the use of non-ditransitive verbs in the two constructions.

本文首先分析了英语双及物动词这一范畴的原型特征，继而探讨了DOC和 DC差异，最后分析了这两种结构的隐喻和转喻机制并用于解释其他也能用于这两个结构的非双及物动词的用法。

Computer Aided Diagnosis Axiography is precise and reliable during the record of condyle movement. On the basis of traditional face bow system, CADIAX use two styli in order to computer the hinge axis; the styli is near to the condyle which diminish the enlargement error and make the record more reliable. Computer technique is adopted by CADIAX, which give a more comprehensive analysis of condyle movement, which can observe the condyle movement in four dimensions. The position of mandible during recording is started from Reference Position, the mandible is posited at a retral position, a more physiological position, and the result is close to reality.

髁突运动轴图描记仪(Computer Aided Diagnosis Axiography)可以准确、可靠的记录分析髁突运动，在传统的面弓记录仪基础上，采用双髁突指针，可以准确计算绞链轴点；测量点与被测髁突距离接近，测量结果更加真实可靠；与计算机技术相结合，数据分析功能更加强大，对髁突运动可以进行四维分析，同步观察双侧髁突的时相特征；记录位置选用参考位置，下颌处于生理后位，记录结果更接近真实情况。

After discussing the principle of dual energy substraction,the paper deals with the matching problem in dual energy substraction in detail. In order to get better matching features of images,the probability enhance- ment is used to process the original images.

本文在讨论了双能量减影的基本原理后，详细地讨论了双能量减影中的图象匹配问题，为了获得较好的图象匹配特征点，采用概率统计方法对原图进行了预处理。

The typic characteristic of this method is the dynamic adjustment of the sampling interval with the change of the network traffic.

作者在研究传统抽样方法和分层随机双抽样方法的基础上，提出自适应随机双抽样方法，该方法最显著的特征是能够随网络流量的变化动态调整抽样间隔。

The soil moisture characteristics, dynamic variation and spatial variation in the fields for 4 soils in the loess area of Gansu province, maximum hygroscopicity, wilting point moisture and water holding capacity were studied. The dynamic variation of soil moisture shows "two peaks -two valleys" type.

对甘肃黄土地区4个土类的土壤水分特征、动态及空间变异规律，以及最大吸湿水、凋萎湿度和持水性能的研究表明，土壤水分动态变异规律呈&双峰－双谷&型，据此在时序上可划分为5个明显的时期：（1）春季增失墒交替期；（2）春夏严重失墒期；（3）夏秋墒情恢复期；（4）秋冬缓慢失墒期；（5）冬季墒情稳定期。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷