查询词典 pole-vaulting

Pole-placement and Inner model tuning methods are discussed finally;(2) For the linear derivative action, several different tracker-differentiators are presented to improve the quality of the derivative signals;(3) A neural network tuning method is given for the nonlinear PID controller which includes the above tracker-differentiator;(4) For the linear integral action, a nonlinear pre-phase integrator is studied in order to decrease the phase delay problem; Simulation results show that the nonlinear PID controller including the pre-phase integrator posseses better performance in both fast and stable property, and strong ability of anti-disturbance;(5) A simple optimal criteria is introduced to optimize the parameters of the nonlinear PID controller based on the pre-phase integrator.

仿真研究表明，由此形成的非线性复合积分PID控制系统，具有快速而平稳的过渡过程和超强的干扰抑制能力；(5)采用物理意义简单明确的目标函数的优化设计方法，对上述非线性PID控制器进行参数整定，达到了满意控制典型工业过程的目的。通过对直线电机伺服系统的仿真研究，表明该种非线性控制器具有同时跟踪多个目标的优越性能。

Airport nearby area is becoming the most active region and growth pole of economical development in regional exploitation.

大型国际航空港，在推动地区经济的发展中起着重要的作用，航空港近邻地区正在成为区域开发中最活跃的地区和经济发展的增长极。

"I would say the ice in the vicinity of the North Pole is primed for melting, and an ice-free North Pole is a good possibility," Sheldon Drobot, a climatologist at the Colorado Center for Astrodynamics Research at the University of Colorado, said by email.

&我想说的是在北极点附近的冰将要融化，并很可能出现一个无冰的北极点。&谢尔登多波特，一位在科罗拉多大学科罗拉多天文动力研究中心的气侯学家在邮件中说。

"I would say the ice in the vicinity of the North Pole is primed for melting, and an ice-free North Pole is a good possibility," Sheldon Drobot, a climatologist at the Colorado Center for Astrodynamics Research at the University of Colorado, said by email.

科罗拉多大学天体动力学研究中心的气候学家谢而登卓伯特在一封邮件中提到：&我认为北极点周边的冰盖很有可能融化，出现一个&无冰&的北极。&

"I would say the ice in the vicinity of the North Pole is primed for melting, and an ice-free North Pole is a good possibility," Sheldon Drobot, a climatologist at the Colorado Center for Astrodynamics Research at the University of Colorado, said by email.

来自科罗拉多大学科罗拉多天文动力学研究中心的气候学专家谢尔顿·特罗伯特在邮件中说道：&我认为北极附近地区的冰面即将融化，而今年夏季无冰的可能性很大。&

"I would say the ice in the vicinity of the North Pole is primed for melting, and an ice-free North Pole is a good possibility," Sheldon Drobot, a climatologist at the Colorado Center for Astrodynamics Research at the University of Colorado, said by email.

每年夏天，这种新冰层比那些经历过多次融化－冻结过程而形成的厚实紧密的多年冰层更容易融化。

The western boundary of EAME Theater is from the North Pole, south along the 75 th meridian west longitude to the 77 th parallel north latitude, then southeast through Davis Strait to the intersection of the 40 th parallel north latitude and the 35 th meridian west longitude, then south along the meridian to the 10 th parallel north latitude, then southeast to the intersection of the Equator and the 20 th meridian west longitude, then along the 20 th meridian west longitude to the South Pole.

EAME剧院的西部边界是从北极，南沿经络75 日至西经77 度线以北的纬度，然后往东南通过戴维斯海峡至40度，北纬的交汇点，第 35 届子午线西经，然后向南沿着平行的第 10 次北纬经络，然后往东南到赤道的交汇点，20 日，西经经络，然后沿经络20 日，西经到南极。

Over the South Pole 飞越南极 In 1929, three years after his flight over the North Pole, the American explorer, R.E.

美国探险家 R.E。

Based on the data analysis and numerical simulation, the Arctic sea ice climate variability was researched, the result were as following:(1) The analysis on the seasonal cycle of the Arctic Ocean and atmosphere showed that: The seasonal surface wind is somewhat trade wind like in some regions in the Arctic. The surface air temperature is robustly determined from the underlying environments such as sea ice and Greenland glaciers. In the sea ice region the precipitation rate is larger than that of evaporation. Furthermore, the Arctic Ocean hydrology is profoundly influenced by the surrounding rivers discharge. These are the decisive factors on the ocean salinity pattern. Sea ice flux through the Fram Strait is larger in winter than in summer. From the 40s in the 20th century on, the ice volume flux has an increasing trend. The Arctic rivers flood season is about the melt period, the winter rivers discharge has a significant increasing. Correlation analysis shows that 7 to 10 years is a characteristic time scale that rivers discharge leads Fram Strait ice volume export.(2) Considering 9 major arctic rivers, the Arctic Ocean circulation was simulated through BOM. The result shows that: The BOM can reproduce the main Arctic Ocean circulation pattern. The"Islandization"which is commonly used in OGCMs to treat the North Pole, not only influences the ocean current near the pole, but also influences the current in the Northern Atlantic Ocean, thus the bogus island might influence global climate through thermohaline circulation in the Atlantic Ocean.

在资料分析和数值模拟的基础上，对北极海冰的气候变率进行了深入的研究，结果如下：(1)对北极地区大气和海洋季节循环特征的分析表明，气候平均风场在部分地区具有&信风&的性质；而气温场与海冰分布及格陵兰半岛冰原的下垫面特征有密切关系；在北极海冰区的降水量大于蒸发量，并且在全球大洋中北冰洋受到河流径流的影响最大，对北冰洋的盐度分布有决定作用；通过弗瑞姆海峡的海冰通量在冬半年大于夏半年，并且从20世纪40年代起，海冰的体积输送有增加趋势；北极河流的汛期主要在融化季节，冬季的河流流量有显著增加的趋势；相关分析表明7到10年是北极河流流量影响弗瑞姆海峡海冰体积输送的一个特征时间尺度；(2)采用BOM海洋模式对北冰洋海洋环流进行了模拟研究，在模式中考虑了北极9条主要河流的作用，结果表明该海洋模式可以较好模拟出北冰洋海洋环流的基本特征；多数大洋环流模式采用&北极岛化&的方法处理北极点，模拟结果表明&北极岛化&不仅影响到极点附近的海流，还会对相对较远的北大西洋海流造成影响，并可能通过大西洋的热盐环流对全球气候产生影响；(3)采用CSIM4海冰模式对北极海冰的气候态进行了模拟。

But this was not the first time Peary had tried to reach the Pole, Before 1909, Peary had made six other attempt to travel to the North Pole. However, he had failed every time.

在1909年之前，罗伯特并不是他们第一个尝试到达北极的人，他与其它六人曾尝试到北极探险，然而，他们每次都以失败而告终。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。