无极

C94 Stage Art of Mei Lanfang, imperforate stamps in horizontal pairs, all with corner wide margins, rare, OG, VF

纪94梅兰芳舞台艺术无齿邮票横双连，均带直角宽边，极少见，原胶，上品

This paper adopts Powell′s direct search method and sequential unconstrained minimization technique in the multiple-object optimum rigidity of open-back inclinable press.

本文采用 Powell 直接搜索法和序列无约束极小化技术，对开式压力机的刚度进行了多目标优化设计，所得结果表明，采用本文介绍的优化方法对提高开式压力机的精度效果明显。

This paper presents a new sensorless vector control method for induction motor drive at very low speeds.

摘 要：本文提出了一种新型极低速异步电机无速度传感器矢量控制方法。

Amur tigers had a copulatory pattem with no lock,thrusting, multiple intromission,and single ejaculation,which belonged to copulatory pattern No.11 in Dewsbury\'s copulatory-patterned system.5 The behaviors that accounted for most of the total time budget during the parturition period were grooming,lying and licking kittens,26.90%,26.23%and 23.83%,respectively.

东北虎的交配模式属于Dewsbury分类系统中的第11种，即无锁结、有抽动、单次插入、多次射精。5在分娩过程中，雌虎的梳理、卧息和舔仔行为时间最长，分别为26.90%、26.23%和23.83%；梳理、努责和舔仔行为发生频率较高，分别是37.95%、18.75%和12.50%。6在育幼过程中，雌虎室外期与室内期哺乳和亲仔行为的时间差异极显著(P＜0.01)，离开行为的时间差异显著(P＜0.05)。

In this paper, the effects of positive charged ion-pair reagents on the retention of positive charged metal chelates and negative charged ones are studied in detail.

目前对其作用机理的研究主要集中于有机物，对离子型金属配合物保留的影响机理研究极少，且无定论。

Hours, as the sky darkened and rain plummeted around us in a suddendeluge.bitter, slightly resinous, but still pleasant — the high, keening soundof the cicadas in July, the feathery barrenness of the trees, the verysize of the sky, extending white-blue from horizon to horizon, barelyinterrupted by the low mountains covered with purple volcanic rock.

我试图描述出一些根本没法形容的食物，像是木馏油的香味——发苦的，有点像树脂，但还是很亲切——七月里尖锐凄厉的蝉鸣，柔软如鸿毛的无叶树，广阔无垠的天空，那种发白的蓝色从一侧的地平线一直延伸到另一侧的地平线，极少被覆满了紫色火山岩的低矮的山丘阻断。

The problem was that the water pump could not pump in a nine-story residential building, as result the water would soon be used up. I arrived at night; found that liquid level relay broke down. then I installed a three-pole knife switch next to liquid level relay to power the pump manually, so the problem with no water to be solved provisionally. then I fitted the Level relay for them, finally the water pump can pump automatically again

有一次来电，物管说他们小区没有电工，说一幢9层的住宅楼一楼的水泵泵不上水，水池很快就会无水用了，晚上我到达现场，原来是液位继电器坏了，我当时已带上了三极的闸刀开关，在继电器的旁边装上闸刀开关，手动供电给水泵，临时解决了没水用的问题，过后才为他装上液位继电器，又恢复了自动泵水。

He has taken so much flak for his occasional temperamental bursts on the court and knucklehead escapades after hours that people sometimes forget what a special basketball player he is.

他偶尔的突破极具威力，但无厘头的失误会让人们忘记他的闪光点。

Therefore, from the theoretical point of view, a solution of the constrained problem and the corresponding values of the Lagrange multipliers can be found not only by the well known method of multipliers but also by performing a single unconstrained minimization of the Hestenes-Powell augmented Lagrangian function on the product space of problem variables and multipliers.

因此，从理论的观点来看，原约束问题的解和对应的拉格朗日乘子值不仅可以用众所周知的乘子法求得，而且可以通过对Hestenes-Powell增广拉格朗日函数在原问题变量和乘子变量的积空间上执行一个单一的无约束极小化来获得。

An algorithm based on the square-root unscented Kalman filter is proposed for weight estimation of the neural network, which can overcome the BP algorithm's drawbacks of slow learning speed, high computational complexity and the likeliness to make the study fall into the local minimum points.

提出一种利用平方根无轨迹卡尔曼滤波进行神经网络权值估计的算法，该算法可以克服BP算法存在的学习速率缓慢、计算量大、容易使学习陷入局部极小等缺点以Mackey-Crass混沌时间序列作为神经网络输入，运用SR-UKF算法、UKF算法、BP算法仿真神经网络。

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。