查询词典 refining engine

The bearing, as one of the aero engine key component, plays a crucial role on the reliabilities of aero engine.

轴承作为航空发动机的关键部件之一，对发动机的可靠性起着决定性的作用。

With the development of modern Electronic Fuel Injection engine, fault diagnosis of the engine became more necessary.

随着电子控制燃油喷射发动机在现代汽车上的广泛应用，其故障诊断也成为当前急需解决的问题。

The author,as one of the experts who draws the national standards for reciprocating internal combustion engine used in explosive gas environment,present in details about the Ex construction of this kind engine used in this hazardous areas and the Ex technology used in this sort of engin.

通过对爆炸性气体环境用往复式内燃机防爆结构及防爆技术的介绍，提出了往复式内燃机应采取的防爆技术措施及应用在潜在爆炸性气体危险场所的相关安全要求，从而确保内燃机的防爆安全性能。

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

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。