查询词典 propulsion

Double electrical podded propulsion is the focus in ship electrical propulsion research field recently.

双吊舱电力推进是目前船舶推进系统研究开发领域引人瞩目的焦点。

In our country, both the theory and the experiment on electrical podded propulsion are still underway. So, developing our own ship electrical propulsion system is our pressing task.

国内对吊舱式电力推进的理论及试验研究工作仍很初步，因此，发展我国自主研发的船舶电力推进系统己成为迫在眉捷的任务。

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。

This thesis explores the feasibility of using synthetic jet actuators for the propulsion of small underwater vehicles. This work was inspired by the widespread use of pusatile jet propulsion by sea creatures such as squid, salp, and jellyfish. The jets created by these animals utilize vortex rings for thrust production.

由於养殖渔业具有短期供给缺乏弹性、易腐败、不易储存等特性，更因为养殖业的交易性质，大多是在货到当天立即透过价格的调整，将到货量全部结清，所以数量与价格的关系，应该是数量影响价格，故本研究透过逆需求系统求算所有参数。

We discuss the effects of GLJ about depressing the spasmodic ileum by experiments on isolated apparatus or holistic animal, in order to learn the mechanism and offer the data to exploiting and researching the new preparation.1 The action of GLJ on the intestinal smooth muscle of holistic animal.1.1 Observe the action of GLJ on normal intestinal propulsion of NIH rats and sthenic intestinal propulsion due to Neostigmine.

GLJ对在体动物肠平滑肌运动功能的影响 1.1观察GLJ对正常小鼠肠推进功能和对新斯的明所致推进功能亢进的小鼠的肠推进功能的影响，结果表明，50mg／kg、100mg／kg、200mg／kg的GLJ对正常小鼠肠推进功能均无显著影响，但对新斯的明所致推进亢进小鼠肠推进功能均有显著抑制作用。

A new ship propulsion method, integrated hydraulic propulsion, was developed to solve following problems as ship tends to have high speed, large scale and large power, its main engine become larger and larger; engine design and cabin arrangement become more and more difficult; ship maneuverability become unflexible as well.

为解决船舶在向大型化、快速化方向发展时所带来的主机设计困难，机舱布置不合理以及机动性差等问题，提出船舶综合液压推进系统。

In boiler field, proper atomization of high viscosity liquid fuel is the essential assurance to safe .stable and high efficient combustion for boiler; in the propulsion equipment of rockers and turbo jet-propelled engine, the atomization quality of liquid fuel is the precondition to improve combustion efficiency and supply sufficient propulsion; in the field of industrial manufacture, metal powder is made by liquid metal which is impacted by high velocity gas; in the field of agricultural irrigation, the water with certain velocity is used to strike metal disk to make insufflations proportionally to the irrigation field; in the technique of desulphurization and coal gasification, proper design of nozzle is the essential factor to advance the efficiency of desulphurization and coal transformation.

在锅炉领域，高粘度液体燃料的良好雾化是锅炉安全稳定高效燃烧的重要保证；在火箭推进装置、涡轮喷气式发动机中，液体燃料的雾化质量是提高燃烧效率并产生足够推力的前提；在工业生产领域，用高速气流冲击液态金属来制备金属粉末：在农业灌溉中，用一定速度的水流冲击金属圆盘破碎并改变方向实现对灌溉区域的均匀喷洒：在烟气脱硫、煤气化等工艺中，良好的喷嘴设计是提高烟气脱硫效率和碳转化率的重要因素。

The usage technique of radar for high-speed ship s to prevent collision in Three Gorges reservoir;2. Research on Modeling and Simulation of High-speed Ship CPP Propulsion System;3. Based on three typical high-speed ship (high-speed monohull ship,planning hydrofoil craft,wave-piercing Catamaran),a mathematic models of high-speed ship ′s propulsion system(common screw propeller,adjustable-pitch propeller, water-jet propeller) and intelligent control system are established the simulation with the help of Matlab/Simulink is realized.

以三种典型的高速船(高速单体船、翼滑艇和穿浪艇)为例，建立了其推进(普通螺旋桨、可调螺距螺旋桨及喷水推进)系统及智能控制的数学模型，并在Matlab/Simulink上实现仿真；建立了推进系统的优化数学模型，编制了优化算法(混沌算法、遗传算法和粒子群算法)程序，实现了智能推进系统的优化设计；最后，运用Matlab/GUIDE进行界面设计，编制了高速船智能推进系统仿真与优化软件，实现了良好的人机互动。

The ship electric propulsion system that we are going to discuss consists of the following parts: six-phase double Y winding shifted by 30°synchronous motor, diode clamped three-level inverter, fixed pitch propeller and control installment of electric propulsion systems based on air-gap-field orientation vector control.

本论文所研究的船舶电力推进系统各个组成部分分别是：双Y移30°六相电励磁同步电动机、二极管嵌位式三电平逆变器、定距螺旋桨船舶推进器和采用基于气隙磁场定向矢量控制策略的电力推进系统控制装置。

Connectors are lines that can be anchored to particular places, called glue points , on the graphic object.

连接符，可固定在图形对象的特定的地方的线条。

Another way of putting it, too many agents have a say in each other's work, and bureaucratic rigor mortis sets in.

另一种表达是，太多的作用物在彼此的工作里都有话语权，官僚的僵尸开始抬头。