查询词典 quadrant electrometer

English astronomer and mathematician who invented a surveying chain, quadrant, and scale and introduced the trigonometric terms cosine and cotangent.

冈特，埃德蒙1581－1626英国天文学家和数学家，发明了测链，象限仪和标尺，并引进了两个三角学术语，余弦和余切

This is what Stephen Covey refers to as Quadrant II projects in The 7 Habits of Highly Effective People.

这就是 Stephen Covey 在他的《高效人士的七个习惯》之中指出的象限 II 。

Covey has found that quadrant two is the key to management.

在商业中，科维博士发现象限二是管理的关键。

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 。

If there was adhesion, then another 5-mm trocar was placed in the right lower quadrant and the dissector was placed into the abdominal cavity through this port. With the help of a forceps, the peritoneal catheter. was inserted into the Douglas pouch.

如患者有脏器粘连等情况，则在右侧腹直肌旁、脐下2cm处插入另一5mm Trocar为辅助操作孔，用以插入切割器，分离粘连组织，使用无损伤抓钳在屏幕直视下置入腹膜透析管。

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。

In the paper, a mathematical model of quadrant detector output signal was established by light energy integral.

通过光能积分建立象限探测器输出信号数学模型，分析了输出信号线性特性与光斑和光敏面半径比、信号采样精度、象限间光电特性均匀性等之间的关系，给出对应探测器输出最优线性特性的光斑和光敏面半径比值，采用分段线性化方法拟合探测器输出特性参数。

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。

If you were not , and OS X just booted normally, have no fear.

如果你没有，和OS X刚刚启动通常，没有恐惧。

I only want to preserve our all .

我只想保存好我们的一切