气体的

Theoretical Part: Through theoretical analysis of chemothermodynamics, combustion and engineering thermodynamics, factors that affect explosion limit were determined, which include temperature, pressure, spark ignition energy, electrode shape, direction of flame propagation and size of explosion vessel.

理论部分：根据化学热力学、燃烧学和工程热力学的基础理论，从本质上定性地分析了爆炸极限的影响因素，包括温度、压力、爆炸容器的大小、点火能量大小、以及火焰传播方向等，得出了这些影响因素对爆炸极限的影响规律，以确保实验有完整的理论基础指导；在此基础上本文提出了一种新的推算在常温常压下可燃性纯质和混合工质制冷剂爆炸极限浓度的理论方法，该方法由可燃性气体的化学组成来推算上下限浓度，不需要其它条件；对混合工质制冷剂，只要再知道混合配比，即可以推算出爆炸极限，使预测爆炸极限的工作更简单、方便。

Results show that deuterium absorption quantity and velocity decrease with helium content increase. Absorption velocity increases with initial pressure, and keeps constant at different initial composition of uranium deuteride.

结果表明，氦含量的增加会显著减少铀的吸氘量，降低铀的吸氘速率；增加混合气体的初始压力有利于铀吸氘速率的增加，氘化铀的初始氘量不影响铀的吸氘速率。

It shows high efficiency, stability and accuracy to on-line monitor dielectric loss, leaking current and equivalent capacitance for transformer bushing. And so dose the gas solved ir oil on-line monitoring system, in a word, it can be considered as the reference to diagnose the insulation status of transformer.

现场的运行分析表明，设计的在线监测系统对变压器套管的介质损耗、泄漏电流、等值电容的监测是有效的，变压器油中六种溶解气体的监测结果较稳定，可以作为变压器绝缘状态的参考依据。

The cold-shock treatment with ozonated water (ozone concentration 2 mg/L, dipping 5 min in the 1 ± 1 ℃cold water) reduced quantities of bacteria and funguses of winter-jujube, and decreased the rate of loss weight, and extended shelf-life of the fruit. By the ultrastructures of winter-jujube pericarp, cold-shock treatment with ozonated water could clean out the waxiness of crackle and lenticel, which is helpful for exchange of fruit internal CO2 and air, and inhibit accumulating of ethanol concentration.

臭氧水冷激处理(臭氧浓度为2mg/L，浸泡时间5min，水温1±1℃)可以明显降低冬枣表面细菌和真菌的数量，减少失重率，延缓冬枣硬度的下降，提高冬枣的货架期；从微观结构观察发现，臭氧水冷激处理可以清洗冬枣表皮裂缝和皮孔的蜡质，有助于枣果内部CO_2气体的排逸，从而延缓了冬枣的酒化；此外，冷激处理可以明显降低冬枣表面残留的农药：如马拉硫磷、氯氰菊酯和溴氰菊酯农药的含量，提高枣果的食用安全性。

Numerical Simulation and Experimental Investigation on A Thermoacoustic Engine with Tapered Resonance Tube A symmetrical standing-wave thermoacoustic engine with tapered resonance tube has been numerically simulated with liner thermoacoustics. The simulation shows that using tapered resonance tube in thermoacoustic engine could decrease the velocity amplitude and lower the total acoustic power loss in the resonance tube. The experimental results indicate that the harmonic was suppressed effectively by using the tapered resonance tube, and the pressure ratio was improved.

采用锥形谐振管的热声发动机的数值模拟和实验研究利用线性热声理论，对一台采用锥形谐振管的驻波型热声发动机进行了数值模拟，发现采用锥形谐振管可有效降低工质气体的速度振幅，进而减小在谐振管中声功率的损失；与一台在相同频率下工作的采用等直径圆柱谐振管的驻波型热声发动机进行了实验对比，结果表明，在使用锥形管作为谐振管的热声发动机系统中，谐振管中的非线性效应得到了明显的抑制，热声发动机在基频模式下稳定运行，压比增大而加热温度降低。

D段,文章第二页的第7行,A variety of tape-recording procedures have thus been devised to minimise the 'observer's paradox'(how to observe the way people behave when they are not being observed).

"被堵在沸腾的岩浆里面的气体突然膨胀"，即可推断出被emitted的东西是gases。这道题目很难，而且有点怪，不是典型的summary的出题方法。但是它毕竟是雅思真题，所以它的思路还是需要了解一下。

In the chapter three, based on the second chapter, by considering the damping effect of the neutral gas and the ion drag force on the dust particle, the electrostatic modes and their instabilities in the dusty plasma in the uniform magnetic field are investigated.

在第二章的基础上，第三章考虑了中性气体的阻尼和离子对尘埃粒子的拖拽力作用，对在均匀外磁场中的尘埃等离子体中的静电波和不稳定性进行了研究，发现中频和低频的波模是衰减的。

Then the major rule of different structure parameters" effects on weapon performance are found, which can provide theoretical basis for the further design of the weapon.An innovative principle concept for "Canister Rifle hitched on the Gun is put forward based on the analysis of the above three concepts.

在对三种方案分析的基础上，本文还提出了一种具有较大创新的枪挂霰弹发射器的原理方案，该方案能够更进一步提高火药气体的能量利用效率和枪挂霰弹发射器的威力。

Internal variations of the climate system, e.g., changes in the abundance of greenhouse gases, also may produce fluctuations of sufficient magnitude and variability to explain observed climate change through the feedback processes interrelating the components of the climate system.

内在气候系统的改变，如温室气体的浓度变化，也会产生足够强度和变异的波动，用以解释所观察的回鐀过程与气候构成要件间相互作用所造成的气候变迁。

Teaching the malfunction diagnoses of the high/low-tension switch formerly always makes students dull. Many charts of construct of sensors, capability of electric appliance and chemistry characteristics of insulated gasses are very hard to understand. After using of CAI this situation could be improved. Computer-Aided Design helps the perform of CAI.

以往在高低压电器开关故障诊断的课程的教学中，它所涉及的传感器的构造、电气元件的性能以及一些绝缘气体的化学特性等总会让学生感到学起来枯燥晦涩，利用了多媒体辅助教学以后可以在一定程度上改善这种情况，计算机辅助设计可以帮助更好地开展多媒体辅助教学。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。