吊

Cangzhou Jintai Weighing Machine Co Ltd - intelligent electronic truck scales, electronic pitless scales, electronic hanging scales, electronic platform scales, industrial measurement automatic control system

沧州市金泰衡器有限公司-智能电子汽车衡、电子台秤，电子吊称，电子吊称衡器，工业计量控制系统

In order to analyze the influence of fins,a low-order panel method based on velocity potential was used to predict the steady hydrodynamic performance of a podded propeller with fins.

为了分析鳍对吊舱推进器水动力性能的影响，用基于速度势的低阶面元法预报附鳍吊舱推进器的定常水动力性能。

So it is necessary and significative to do some primary study about this field.In this paper, first, will simply introduce the development actuality of electrical propulsion, particularly analyze the configuration and technology advantage of podded electrical propulsion system .

本文首先回顾了船舶电力推进的发展历程，重点分析了吊舱式电力推进系统的技术优势和应用现状，对目前在吊舱式电力推进领域所广泛采用的变频调速技术和PLC控制技术一一作了介绍。

Then introduce the frequency conversion and PLC technology, which is widely used in today's podded electrical propulsion.In allusion to the operation feature of double-podded electrical propulsion slewing system, an experimental slewing control system will be designed next.

在充分收集国内外有关技术资料的基础上，针对双吊舱电力推进系统的结构组成和运行特点，提出了一种基于PLC和变频器控制的双吊舱电力推进系统的试验回转方案。

An unsteady BEM is used to calculate unsteady hydrodynamic performance of the podded propeller. The interactions between the propeller and the pod are treated by two iterative calculation methods: induced velocity and induced velocity potential.

为了计算吊舱推进器的非定常水动力性能，建立了用诱导速度势处理吊舱和螺旋桨非定常相互干扰的方法，并和用诱导速度处理两者相互干扰的方法作了对比分析。

We discuss the following conveyors in this category:(1) chain,(2) slat,(3) in –floor towline,(4) overhead trolley, and (5)power-and-free over-head trolley.

我们在这一个种类中讨论下列的运送装置：（1 链(2)，劈拍劈拍地碰撞，(3)在－地板拖绳(4)，在头上的吊运车和（5 力量－和－自由的在－之上头吊运车。

Trepanning hole on the glass,according to the specification and size of parts.

测量门洞的尺寸，根据吊轮、吊轨实际尺寸和说明书下料。

It is studied that the responses of overhead crane when the trolly is running. The simulation of lifting load process, location of the trolly and stresses of structure by computer are discussed and after verified by the experiments, we have got distribution function of stresses in stucture of overhead crane under different load states and distribution functions of location of the trolly.

研究了小车运行时桥式起重机的动态响应，讨论了起重机吊重载荷过程、小车位移及桥式起重机主梁结构应力的计算机仿真，在得到实测数据的验证之后，通过计算机仿真得出不同载荷状态及不同小车位移分布下桥吊主梁结构应力的分布规律。

Under the condition of knowing trolly"s relation datas, the wire rop-load modle taking its load as the study object, using D"Alembert"s Principle and Hybrid method, solves out the mathematical expression of wire rop"s traction while settig the hiost speed; The elctronic motor-drum modle"s build up is attracted to the elctronic motor"s torque, and combines with the wire rop traction"s role on drum, only pay attation to the coupling"s flexibility and damping, which is between the elctronic motor and the reducer. The theory of transmission equations establishment is in Project Vibration.

钢丝绳—吊重模型是在小车运行机构的相关数据均已知的情况下，以吊重为研究对象，利用达朗伯原理和动静法，在假定起升速度已知后求解出钢丝绳牵引力的表达式；电动机到卷筒部分的模型则是建立在电动机输入转矩形式已知的基础上，结合钢丝绳牵引力作用在卷筒上的工作阻力矩，只考虑电动机与减速箱之间的联轴器的弹性阻尼，利用工程振动原理建立传动方程。

During transporting ,the AS should prevent and damage unrecovered.

钢丝绳和顶盖及箱体接触，需用专用吊具，选用合适的吊索起吊。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。