象限

With the crop marks created in Photoshop, I produced a template within After Effects that takes a video as input, and through some expressions I wrote, seperates and numbers each frame to a specific quadrant on the 4×6 print, and then outputs a sequence of JPGs.

与作物马克创造了在Photoshop中，我产生了模板后的影响，采取视频输入，并通过一些表达我写的，分隔和人数每帧一个特定的象限对4× 6打印，然后输出一个序列对jpgs 。

The error source of CMM is complex, and the current main research is its geometric error. In the paper, 21 items of geometric error are measured accurately, simply and fast with the 2-D laser interferometer and four quadrants photo detector. The measurement gets rid of measuring so many lines and several diagonal lines in linear displacement method, and also solves the question that error measure of large-scale CMM can not be measured with 1-D ball array and ball plate conveniently.

坐标测量机的误差源纷繁复杂，当前主要研究的是其几何误差，课题中研究了一种采用二维激光干涉仪和四象限光电探测器相结合的测量方法，对三坐标测量机的21项几何误差进行了准确、简便、快速的测量，摆脱了线位移法测量直线过多且包含多条对角线测量的弊端，同时也解决了一维球列和球板不方便检测的大型测量机的误差检测问题。

ABSTRACT: A Rockwell PowerFlex7000 Variable Frequency Drive is used in JiuZHou Electric medium voltage drive test bay as the converter. Because of it belong to the current source drive, it has the function of the four quadrant, it can achieve the energy feedbackmake the motor brake,also has the advanced vector control technology, so it can achieve all kinds of load test, there are no other drives can replace it in simulate motor load. PowerFlex7000 drive has ability to achieve the full load test before the drive leave factory.

摘 要：罗克韦尔PowerFlex7000变频器在九洲中压变频实验站测试系统中作为变流逆变器使用，由于本身属于电流源型变频器，具有四象限运行功能，能够实现能量的回馈和对电机的制动，先进的矢量控制技术，可以实现各种复杂多变的负载特性，在模拟电机负载方面起到了其他变频器无可替代的作用，实现了变频器出厂之前的满负荷测试。

It is proved that there is no limit cycle around the positive equilibra by constructing Dulac function, thus global asymptotic stability of the positive equilibria is proved in the first quadrant.

分析了该系统的平衡点性态，利用Dulac函数证明了系统在正平衡点外围不存在极限环，从而证明了正平衡点在第一象限内是全局渐近稳定的。

A predator model with refuge and toxicity is studied. By constructing a suitable Dulac function, it is shown that there is no limit cycle in the first quadrant, thus the globally stability of the equilibrium is proved. Further more, the paper analyzes the influence of refuge, toxicity and harvesting. It is amazing that ① if the death rate of predator is big or the harvesting effort is big, the existence of the predator is unrelated with refuge; if the death rate of predator and the harvesting effort are small, and the refuge is small enough, the population of both species is increased as the increase of refuge;② if d2=0, the increase of d1 has no influence on the prey population, while the population of predator is decreased.

研究一类有避难所、毒素作用和外界捕获影响的捕食系统，通过构造恰当的Dulac函数，证明系统在第一象限没有极限环，从而证明了平衡点的全局稳定性；分析了避难所、毒素、捕获作用对该系统最终种群数量的影响，发现：①当捕食者的死亡率大或其被捕获得多时，两种群的绝灭与避难所的存在无关；当捕食者的死亡率小、被捕获得多且避难所足够小时，随着食饵避难所的增加，捕食者种群数量也随之增加；②当毒素d2=0时，毒素d1的增加对食饵种群最终数量没有影响，而使捕食者种群数量下降。

Consider the actual meaning of the system, we are mainly interested in the dynamical behaviour of the system in the first quadrant.

根据问题的实际意义，我们主要感兴趣的是系统在第一象限内的动力学行为。

When I first meet a new person, the size of the opening of this first quadrant is not very large, since there has been little time to exchange information.

当我第一次遇到一个人的时候，这个公开的第一象限面积并不太大，因为交流信息的时间不多。

These points would be scattered throughout the first quadrant.

这些要点将分散在第一象限。

During his first mission to the Alpha Quadrant , the Doctor was instrumental in establishing contact with Starfleet .

由於医生能被载入与星联建立起来的连接中，他被派去执行他在Alpha象限的第一个任务。

Bus mobile TV, because of its huge audience and the number of "forced ratings" features, from the date of birth on the natural way to reach audiences with higher rates in the first quadrant IV of the competitive advantage of the monopoly of its operating strategy therefore focused on the improvement of audience loyalty.

公交移动电视，由于其数量巨大的受众和"强迫收视"的特点，从诞生之日起，就天然地拥有较高的观众到达率，处于第IV象限的垄断竞争优势所以其运营策略主要集中在观众忠实度的提高。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。