查询词典 jet propeller

According to the type of aircraft engines, a propeller and jet aircraft division.

按飞机发动机的类型分，有螺旋桨飞机和喷气式飞机之分。

At first, the kind of high-speed craft and its current situation are introduced in this paper. Through analyze and compare the characteristics of their performance, three kinds of high-speed craft are selected to be optimized. They are hydrofoil-gliding craft, wave-piercing catamaran and frigate, which power equipment of propulsion system are the common screw, pitch-adjustable screw and water-jet propeller.

本文首先介绍了高速船种类及其推进器的发展现状，通过分析比较各种船型的性能特点，选取了三种典型的高速船(翼滑艇、穿浪艇和护卫舰)并分别以普通螺旋桨、可调距螺旋桨和喷水推进器作为三种船型等动力装置。

The Derwent and Nene turbo-jet engines had world-wide military applications; the Dart turbo-propeller engine became world famous asthe power plant for the Vickers Viscount aircraft.

德温特"和"尼恩"涡轮喷气发动机获得了世界性军事应用；"达特"涡轮螺桨发动机作为维克斯公司"子爵飞机的动力装置而闻名于世。

A turbojet engine used to drive an external propeller.A simple, essentially tubular jet engine, such as a ramjet .

压式喷气发动机一种简单的，主要为管道式的喷气发动机，如喷压式发动机

In a turboprop engine, the main thrust comes from the propeller and only a small proportion from the jet exhaust.

在涡桨发动机中，主要的推力来自螺旋桨，只有一小部分来自喷出的尾气。

The resuspension of contaminated bottom sediment on the disturbing of boat propeller jet flow was studied.

进行船舶螺旋桨射流扰动下污染底泥起悬的计算研究。

By simulating calculation with a new velocity distribution formula of free jet flow and a scour rate one, the resuspension of contaminated bottom sediment on the disturbing of boat propeller jet flow was studied.

河流、湖泊中船舶的航行对于水体底部的污染沉积物具有很强的扰动作用，特别是船舶尾部的螺旋桨射流。

This paper presents and theoretically analyses the design of a marine jet propeller riven byimpulsing current. This new Propeller has obviously a higher efficency in energy-saving and a higher speed than any other propellers available.

本文提出了船舶冲击电流喷射推进器的设想，并从理论上分析了这种设想在节能效果和提高船舶航速方面具有比螺旋桨推进器明显优越的特性。

The present objective is to evaluate the possibility of installing pump jet on fishing vessels, including simulation of flow field near the pump jet, comparison with traditional propeller on issues of tangling, and life-cycle cost for typical Taiwanese fishing methods.

本研究目标是评估泵喷推进器用於渔船上的可行性，包括泵喷推进器出入口流场模拟、泵喷推进器与传统螺桨绞缠性能的比较、台湾渔船使用情形下成本效益之评估，也针对一般的台湾渔船，进行改用泵喷推进器的初步线型与安装设计并比较其静水性能与稳度影响。

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。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。