查询词典 difference engine

An analytical method to predict the effects of rotor downwash on engine jet was proposed to investigate the flow pattern of helicopter engine jet.

通过考察旋翼洗流对发动机喷流的影响来研究直升机发动机喷流的流动形式。

At the same time, pattern recognition has been used for abstracting characteristics、predicting the life and evaluating the properties of engine. This research contributes toward global diagnosis for the diesel engine in eight ways.(1) Put forward"the Arithmetic of distinguish the period automatically using auto-correlation method";(2) Separate the waves of continuous knocks using WV distribution;(3) Propose"the logarithmic spectrum approximate method"to analysis the response of the knock between the steel and steel;(4) Discuss the relationship between the time-frequency distribution and timescale distribution in detail, and give the principle of classification;(5) Use the wavelet method to analysis the pressure signal of exhaust、suction;(6) Use the shape of vibration signal to analyse the working situation of cylinder;(7) Use the pattern recognition to select the good samples and abstract the effective characteristics;(8) Develop the model of total properties evaluation and life prediction.

本文在广泛的、深入研究的基础上，应用多种信号处理手段来分析处理数据，同时利用模式识别方法对故障的特征提取、寿命预测以及性能评价作了探讨，本文进行了以下几项工作：（1）提出了基于自相关自动周期识别算法的柴油机振动信号预处理策略；（2）提出了基于WVD分布的连续撞击响应信号的分离策略；（3）提出了基于对数谱拟合方法的钢—钢撞击响应求解模型；（4）提出了基于波形分析的非正常燃烧振动信号的诊断模型；（5）提出了基于小波细节信息的进气压力信号和曲轴箱压力信号的诊断模型；（6）提出了基于小波近似的喷油正时信号中燃烧位置的自动定位；（7）提出了基于统计模式识别方法的故障诊断知识的自学习与自组织策略；（8）提出了基于特征压缩思想的柴油机总体性能评价及寿命预测模型。

Modes of the suddenness blast-off of the engine are taken based on fault tree qualitative analysis,and the probability of the suddenness blast-off of the engine are obtained based on fault tree quantitative analysis.

定性分析获得了发动机意外点火模式和避免意外点火的有效模式，定量分析得到了发动机意外点火概率值，最后对分析结果进行了评价。

Through analysis of the suddenness blast-off of the engine of the ship-to-air missile when preparing,the fault tree of the suddenness blast-off of the engine is built.

通过对舰空导弹发射准备时发动机意外点火事件的分析，建立了发动机意外点火故障树。

In this paper the transients are calculated and analysed by means of the numerical computation method for pulse operation,four-engine parallel operation and variable-thrust operation of the liquid bipropellant attitude control engine.

本文用数值计算的方法对双组元液体推进剂姿态控制发动机的脉冲工作，四机并联工作，变推力工作的瞬变过程作了计算分析。

This engine complement includes sixteen 25-pound thrust engines, eight 100-pound thrust bipropellant engines and a 7,500-pound thrust Orion Main Engine.

但是如果一切能如期进行，这个太空舱将会在2014年开始把宇航员带到国际空间站。

Starting from the graphs of P-V and T-S and the second law of thermodynamics, and on different aspects and with different methods, this article studies the maximum value of the efficiency of heat engine in the process of arbitrary cycles, and presents the conclusion that the efficiency of the heat engine in Carnot cycle is the greatest among all arbitrary cycles.

卡诺定理给出了热机的循环效率极大值问题。由P-V图、T-S图、热力学第二定律出发，从不同的角度，采用不同的方法，对任意循环过程的热机效率极大值问题进行了研究，证明了任意循环过程热机效率以卡诺循环的热机效率为最大极限值的结论

The turbine engine type is H-80. With quasi-one-dimensional, aerothermodynamics theory analysis, the station Mach number of turbine engine can be calculated.

引擎全程控制由电子控制单元操作，透过ECU数据显示器，控制不同转速，并分别量测引擎基本性能参数，如引擎推力、压缩比、油耗、燃烧室温度T4、排气温度EGT、尾管压力等。

The Whittle engine formed the basis of the modern gas turbine engine, and from it was developed the Rolls-Royce Welland, Derwent, Nene and Dart engines.

惠特尔的这种发动机形成了现代燃气涡轮发动机的基础，并且从它发展出罗尔斯－罗伊斯公司的&维兰德&，&德温特&，&尼恩&和&达特&发动机。

PRETORIA, South Africa, August 28, 2001 – Ford's RoCam engine, which is made in Port Elizabeth, is proving to be a winner in both developing and more sophisticated markets, says Ford South Africa's director of engine and component manufacturing, Charlie Shearer.

南非比勒陀利亚2001年8月28日讯：福特RoCam发动机在伊丽莎白港被造出，在新兴市场和更成熟的市场中，RoCam发动机是成功的。

A backer of an Afghan law that critics say legalizes marital rape has rejected the international outcry as foreign meddling.

饱受批评的一项法律的拥护者说合法化的婚内暴力不会受国际舆论的干涉。

Years ago, a ancient Egyptian fleet went to the Land of punt for seeking a kind of flavor named "myrrh", and aromatic plants which has dense exotic style for the queen Hatshepsut.

3500年前的一个古埃及的舰队到&彭特之地&寻找一种叫没药的香料。