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It is available to carry out numerical simulation and fluid dynamic analysis further. Based on Frozen-Rotor Approach and Rotor-Stator Approach, the numerical simulation was carried out in the centrifugal pump and the numerical results showed that the flow in the impeller and volute of centrifugal pump is periodically unsteady. Due to the interaction between impeller and volute the flow is characterized by pressure fluctuations and it is the strongest at impeller outlet and at the vicinity of the tongue. The unsteady pressure fluctuations are also one of the most important reasons to induce vibration and noise. Secondly, the flow field of the volute is characteristic of the vortex flow, and the vortex flow presents very complicated developing process which is creating, increasing and dissipating every now and then. All these lead to very large flow loss in the volute.

采用Frozen-Rotor冻结转子模式和Rotor-Stator滑移界面模式系统开展了不同工况下离心泵内叶轮与蜗壳耦合的定常和非定常流动研究，结果表明由于叶轮与蜗壳的干扰蜗壳进口周向流动的不均匀性是非常强烈的，特别是叶轮与蜗舌间的相互干扰最为强烈，一直影响到叶轮进口和蜗壳扩散管出口的流场；在蜗壳内整个流动是以旋涡形式向出口推进的，并随着包角的变化旋涡表现出十分复杂的产生、发展和耗散的演化过程，导致蜗壳内较大的流动损失。

Dollars to the global super-low-cost the transfer of book copyright, welcome to the world's strongest permanent link publishers and mozou published.

有能力找到出版商并以1亿美元成交者，有500万元人民币奖励，在成交当天兑现。

An early swing can be defined as a swing that places the release beyond the strongest leverage area… whereas the thumb exits the ball prior to the upward direction of the swing plane.

也就是说姆指的退出早於摆荡面的方向往上以前。

The company has a glass tank furnace 5, bottle 12 automatic production line, glass production line 2 printing, glass production line of a frost, like a production line of ceramic, glass bottles annual production capacity of 150,000 tons, is the largest in Guangxi, most species, the strongest technical force manufacturers of glass bottles, beer bottles to create the most professional competence of manufacturing enterprises in Guangxi province and the surrounding large and medium-sized enterprises in food production partner.

目前公司拥有玻璃池炉5座、玻璃瓶自动生产线12条、玻璃瓶印花生产线2条、玻璃瓶蒙砂生产线1条、仿陶瓷生产线1条，年产玻璃瓶15万吨，是广西规模最大、品种最多、技术力量最强的玻璃瓶制造企业，是啤酒瓶制造最具专业能力的生产企业，是广西及周边省份大中型食品生产企业最佳的合作伙伴。

2It is suitable to regenerate by cutting stem in April for Ber in plastic shed in Beijing, at this time the ability of sprout is strongest.

北京地区棚栽的台湾青枣适宜在4月份进行截干处理，此时枝条的萌发能力最佳。

The Aerial Steam Carriage never took to the air, but it nonetheless registered firmly in the minds and imaginations of multitudes of people to became one of the strongest archetypal images of early aeronautics.

空中蒸汽运输从来没有升空，但尽管如此注册牢牢掌握在思想和想象力众多的人，以成为其中一个最强劲的原型图像早期航空。

Among the landscape characters,the landscape diversity had the strongest influence on the outbreak intensity of the Japanese wax scale.

景观多样性较高、荒地比例较大的地区，日本龟蜡蚧的危害程度较低。

Among the landscape characters, the landscape diversity had the strongest influence on the outbreak intensity of the Japanese wax scale.

典型相关分析结果表明：日本龟蜡蚧发生状况与枣园植物群落性状显著相关，在景观特征指数上，也表现出与植物群落相类似的平原与丘陵地区的差别，在景观性状中，景观多样性和荒地比例对日本龟蜡蚧的影响最强。

Results show that in recent years, the summer rainfall in Harbin displayed the most apparent cyclical variation on a 29-38-year scale, the largest modulus, and the strongest energy; and the summer rainfall in Nenjiang did an obvious cyclical variation on a 19-30-year scale, and its energy value is quite large. Both the two cyclical variations showed a trend of being stronger in energy with the time.

结果表明：哈尔滨近年来夏季降雨在29~38a尺度周期变化最明显，模值最大，能量最强；嫩江夏季降雨在19~30a周期变化较强，能量值较大；2个周期变化都具有随时间推移能量进一步加大的趋势。

Researches on the characters of ultraviolet absorption spectrum and resonance scattering spectrum show that the strongest resonance scattering peak appears at 470 nm,and there is an absorption peak at 404 nm.

研究了核·壳复合纳米粒子的紫外可见吸收光谱和共振散射光谱特性，在470nm处有最强共振散射峰，在404nm处产生一个吸收峰。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。