进气

The electronic heating evaporator in the high-side gravity recirculation system in ANSI/ASHRAE 64-2500 standard is replaced by a new type plate evaporator which is more effcient and energy-saving, because the cold water outlet from the evaporator that is used to heat the cryogen can be used once again to cool the air in the air inlet trunk; an air processing unit is designed in the lab design, so to imitate all kinds of weather in each season in every location of China at any time the test is being made; the data selection system can send all the data in the test to the computer at one time, and to reduce the cost of the test some data which is more stable are read manually through traditional meters if this can not sacrifice the precision of the test.

本文的设计中用效率更高的新型板式换热器代替了原ANSFASHRAE 64——2500标准中压缩驱动循环系统中的电加热蒸发器，加热冷剂后得到的低温淡水还可以用于冷却进气通道中的空气，不仅提高了效率，而且更加节能；实验室方案中增加了空气处理系统，可以实现随时对全国各地各季节的空气状态进行模拟，方便实验的进行；采用数据采集系统将数据整体采集到电脑中方便数据处理，而且对于变化频率不高相对较为稳定的数据采取传统仪表进行人工读数，在保证测试结果准确性的前提下降低了成本。

The effect of different operating conditions on size and crystal form is investigated.

对不同进气条件下所生成TiO2纳米颗粒的粒径与晶型进行研究。

The characteristics of cyclohexane oxygen-enriched oxidation were studied.

研究了环己烷富氧氧化的特征，考察了进气氧浓度的提高对反应速度、选择性、安全性和经济性的影响。

The cylinder head intake and exhaust ports and intake and exhaust manifolds are shape optimized for better volumetric efficiency .

气缸盖进气和排气的港口和进气口和排气管的形状更好的容积效率的优化。

Results show that there are different optimum swirls in different ranges of diesel engine operating condition.

试验结果表明，发动机在高、低速区的最佳进气涡流强度是不同的。

By using inlet guide vanes,great attenuation of total pressure distortion and static pressure distortion,weak incidence angle changes and low total temperature distortion production through the rotor were obtained.

1引言随着新一代飞机机敏性的进一步提高及其飞行包线范围的进一步扩大，其推进系统进口流场品质进一步恶化，表现为进气总压畸变程度的增加，从而引起发动机性能降低、稳定裕度的下降[1~5]。

"In a two-stroke cycle, the compression and power strokes of the four-stroke cycle are carried out without the inlet and exhaust strokes, in one upstroke and one downstroke of the piston and one revolution of the crankshaft."

在二冲程循环中，只有四冲程循环的压缩和动力冲程，而没有进气和排气冲程，在活塞的一个上升冲程、一个下降冲程，同时曲轴旋转一周后完成。

Some conclusions are followed:(1)the reaction ratio of boron is 12% in primary combustion;(2)the degree of agglomeration can be decreased adopting boron coated with AP;(3)the content of oxygen is very important for afterburning efficiency;(4)the afterburning efficiency will be changed with different air-gas ratio;(5)the head distance of after-burning chamber is increasing, the circumfluence in the head of after-burning chamber is stronger and the distribution of fuel backward the after-burning chamber is more well-proportioned.(6)the combustion efficiency of DR will be improved by increasing the area of fuel nozzle.(7)the angle between dual air-inlets have complex influence with the combustion of DR.

通过本项研究，取得如下结论：（1）一次燃烧硼反应比例在12～15％之间；（2）AP包覆硼，可以降低硼结团度，有利于一次燃烧喷射效率的提高，也有利于硼在补燃室进行二次燃烧；（3）进气空气中的氧含量对二次燃烧非常重要；（4）对于一定配方的含硼富燃推进剂，不同的空燃比，二次燃烧效率不同；（5）补燃室头部距离的增加能增强补燃室头部回流以及提高燃料在补燃室后段分布的均匀性；（6）在一定范围内，增加一次燃气喷嘴面积能提高冲压发动机燃料的燃烧效率；（7）进气道夹角对补燃室内燃料的燃烧影响复杂。

By the numerical methods, the efficient and reliable numerical axisymmetric models have been established, especially the inner core passage, the effect of blade entrance angle and fan nozzle pressure ratio on thrust reverser effectiveness and discharge coefficient is investigated, the calculated results and the available experimental data are compared.

本文建立了外涵叶栅反推器的轴对称计算模型，给出了内涵计算域的有效处理方法，利用数值模拟手段研究了叶片几何进气角、外涵入口压比的变化对反推效率、流量系数等的影响规律，并将计算结果与可能得到的试验结果的数据点进行了比较。

In order to improve the engine's power, emission and the economy of the fuel, we developed a system to investigate the electronic control fuel injection of motorcycle engine. Inspect each parameter real-timely and modify some parameters factitiously to get the best power performance, emission performance and economical performance.

0引言采用电子控制燃油喷射技术是减少机动车排放污染的最有效的方案，它具有反应快、实时性好、控制精度高与控制算法灵活等特点，可以根据发动机运行的不同工况，实现空燃比最佳控制，从而取得良好的排气净化和节油效果；而且相对于原来化油器式的燃油喷射方式来说，电子控制的进气压力损失小，燃油效率高，满足发动机动力性、经济性和排放性要求[1]。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。