查询词典 Point Four

When t=1/2, Path of the C-curves and H-curves ofdegree two and three are lines, but not for the Path of degree four, weneed more about the control polygon. Paths are commonly curves. Butthe reference [38] pointed out that they can closely be approximated bylines. By this method we can get a C-curve passing a given point easily.

一般情况下，C曲线族的Path也是曲线，文献[38]以三次C曲线为例，提出用直线进行近似，应用这一方法，我们可以简洁的求出过一定点的C曲线，只要给定的点在C曲线族的范围内，则可以首先求出过这一点的C曲线族的Path，然后可以确定过这一点的C曲线的形状参数α，以及曲线参数t.H曲线的情况与C曲线类似。

Originating from the four phases, the writer proposed six corresponding approaches to the teaching of mathematic rules, i.e., environment constructing approach, communizing and forming combination approach, researching and accepting approach, verifying from multi point of view and multi paths approach, rule networks constructing approach, comprehending and memorizing combination approach, etc.

然后就这四个阶段，依次提出数学规则的教学原则，它们分别是构建情境原则、同化与形成相结合原则、探究与接受相结合原则、多角度、多途径证明原则、构建规则网络原则和理解与记忆相结合原则。

Synthetically considering these characteristics, the method of freeway management and control are presented according to four aspects: system objective orientation and concept design, system demand and requirement analysis, system data management and network structure, traffic control and accident detecting theory as well as its application. Function and structure of system are delimitated from the point view of integration. Construction and function demand of subsystem are analyzed and basic implement projects are presented. In this thesis, system data flow and management method and target which based on system network topology structure and equipment demand are described. Traffic modeling ideology and the process of making dynamic model as well as accident detecting program are presented with centralized and distributed traffic control theory in detail, then freeway ramp control theory which based on predictive model and its theoretic pattern are explored. Finally, based on the object oriented programming, program of accident detecting and checking on freeway is developed by using visual C++ as tool.

论文综合考虑高速公路交通管理系统的上述特征，分别从系统目标定位及概念设计、系统需求分析、系统数据管理及网络结构分析、交通控制与交通事件检测理论与应用四个层面，对高速公路交通管理与控制问题进行了系统阐述，界定了系统的功能及各功能的实现要求，并从系统集成角度划分了系统的结构；分析了各子系统的信息、功能、建设等方面的需求，给出了基本实施方案要求；对系统数据流程进行了描述和梳理，提出了数据管理的方法、目标及措施，分析、设计了系统网络拓扑结构及设备需求；阐述了交通模型的建模思想和动态交通模型的建立过程，对集中式和分散式全局交通控制理论进行了详细的分析，提出了基于预测的高速公路匝道控制理论，并对理论模式及相关的问题进行了研究，分析了高速公路事件检测系统，并采用面向对象的编程思想，以Visual C++为编写工具，开发了高速公路事件检测系统分析软件。

One in four respondents in our survey say they are currently dieting, and roughly half (52 percent) say they have dieted at some point in their lives.

有四分之一的被调查者表示他们目前正在节食，还有大约一半的人（52％）表示他们曾经采取过节食这种做法。

To rattle the rats to the point where their stress response remained demonstrably hyperactive, the researchers exposed the animals to four weeks of varying stressors: moderate electric shocks, being encaged with dominant rats, prolonged dunks in water.

为了使大鼠的压力反应达到最活跃点，研究者让实验动物在不同的压力环境中生存如温和的机械振动，和吵闹的大鼠关在同一只笼子里，延长在水中浸泡的时间。

Now, at the expiration of four years, during which public declarations have been constantly called forth on every point and phase of the great contest which still absorbs the attention and engrosses the energies of the nation, little that is new could be presented.

的。可是现在，四年任期刚刚结束，在这期间，关于那至今仍吸引着举国上下的注意，消耗着全民的精力的巨大斗争的各个阶段的任何一个细节，随时都有公告发奉，现在也实在再没有多少新东西可讲了。

Now, at the expiration of four years, during which public declarations have been constantly called forth on every point and phase of his great contest which still absorbs the attention and engrosses the energies of the nation, little that is new could be presented.

可是现在，四年任期刚刚结束，在这期间，关于那至今仍吸引着举国上下的注意，消耗着全民的精力的巨大斗争的各个阶段的任何一个细节，随时都有公告发奉，现在也实在再没有多少新东西可讲了。

Now, at the expiration of four years, during which public declarations have been constantly called forth on every point and phase of the great contest which still absorbs the attention and engrosses the energies of the nation, little that is new could be presented.

现在四年任期届满，在这期间于战争的每个重要时刻和阶段──这场战争至今仍为举国所关注、并且占用了国家的大部分力量──我都经常发布文告，所以现在也提不出什么新的主张。

Now, at the expiration of four years, during which public declarations have been constantly called forth on every point and phase of the great contest which still absorbs the attention and engrosses the energies of the nation, little that is new could be presented.

现在四年的任期已满，在这段战争期间的每个重要时记得和阶段中--这个战争至今仍为举国所关注，而且占用了国家大部分精力--都经常发布文告，所以现在很少有什么新的情况可以奉告。

Now, at the expiration of four years, during which public declarations have been constantly called forth on every point and phase of the great contest which still absorbs the attention and engrosses the energies of the nation, little that is new could be presented.

现在，四年任期已满，其间南北方的战争（它现在仍吸引着人民的注意力，并牵扯着整个国家的精力）的每一重要时刻及每一阶段的情况，在公告上都可以看到，所以现在几乎没有新的情况可以报告大家。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。