对汽车点火系统异常现象的分析

本文对汽车点火系统应满足的要求,汽车点火系统的故障类型及汽车点火系统异常现象进行了简要的分析。     

汽车点火系统常见故障与维修策略

本文对汽车点火系统常见的几种故障以及维修策略进行了简单分析，使读者对汽车点火系统常见的几种故障及维修有所了解。     

汽车电子点火多媒体学习系统的设计与实现

介绍现代汽车电于点火多媒体学习系统的结构组成和研制开发方法，重点论述了系统的文本素材、图像素材、声音素材和动画素材的制作技术，及系统的编辑合成技术。采用Photoshop、3DMax、Animator Pro、Animator Studio、Amimator Soundlab和Autherware等软件，开发出了汽车电子点火多媒体学习系统。     

浅析汽车点火系统发展

本文通过分析汽车三种点火系统的工作原理及优缺点,阐述了汽车点火系统随着科学技术的进步,所不断做出的改进,并对汽车点火系统的发展历程有一个全面的认知。     

汽车点火系统发展研究

阐述汽车点火系统的发展历程, 分析各时期点火系统所存在的问题, 研究点火提前角（ 点火时刻） 、点火能量（ 点火闭合角、初级导通时间） 与汽车运行工况之间的关系, 探讨点火系统的发展, 得出若干有价值的结论     

汽车火花点火系统电磁干扰的抑制方法

汽车发动机由高电压电火花点火,点火过程产生的电磁波辐射对车载无线电接收机及周围电磁环境都会造成电磁干扰.汽车点火系统对外的电磁干扰主要来源于火花塞和高压点火线,通过建立火花塞的等效电路模型,研究了流过火花塞气隙的点火脉冲电流ip与高压点火线上点火电流i之间的传输函数G(ω),仿真分析比较了不同阻值的电阻型火花塞和电感型火花塞传输函数的幅频特性,从而在不影响点火性能的情况下,获得抑制汽车火花点火系统电磁干扰的有效方法,为汽车电系的电磁兼容设计提供有价值的理论参考.     

汽车示波器对点火系统的故障诊断

重点讲解了点火系统的波形分析,利用汽车示波器对点火系点火电压进行波形检测,再用检测到的波形与正常波形进行对比,以此对汽车点火系进行故障检测与诊断的基本原理和方法。     

汽车点火系统系列实验箱设计与实现

本课题以我院汽车工程系汽车电子技术专业教学应用为背景,以有利教学的原则,以教师自主开发制作为前提。随着科学技术的不断发展,汽车的技术也有了巨大的发展,大量地使用电子元件以及利用计算机监控汽车的运转。而汽车发动机的点火系也有了很大的变化:从传统点火系到电子点火,再发展到无分电器的独立电脑点火系统,研究一系列由低级到高级汽车点火系统实验箱,必将在教学中发挥重要作用。     

汽车发动机点火系的微机诊断系统

根据利用点火系次级电压时域波形分析的方法对点火系技术状况进行诊断的原理，开发了汽车发动机点火系微机诊断系统。其特点是配备适当的硬件后着重通过软件系统的开发来实现系统的功能。     

改进国产汽车燃油加热器点火性能

分析了研究了中国生产的汽车燃油加热器中的主流产品因供油系统和点火系统的性能不够完善而导致使用不便和燃烧运行初期排烟过浓，滴油严重等，并采用两种不同点火塞进行了排放试验，结果表明，该试验方法对降低该产品运行初期的排烟和简化开机操作具有明显效果。     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the