the study results show that, near the top of compression stroke, the turbulent motion is enhanced with the increasing in speed and throttling, enhanced with the decreasing in squeeze gap and compression ratio.

this paper focuses on the direct injection gasoline during the compression stroke and expansion stroke, analyzes the change process of pressure, temperature and flow field during the fuel injection period, before and after fuel injection.

本文主要对直喷式汽油机在压缩冲程和膨胀冲程中的燃烧进行模拟，分析了喷油前、喷油中、喷油后压力、温度及流场的整个变化过程。

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during the compression stroke the turbulence kinetic energy decreases due to the dissipation effect, while the turbulence kinetic energy in the center of the cylinder increases as a result of the squish effect.

缸内平均湍动能强度在进气冲程中总体呈先增大后减小的趋势，压缩冲程中耗散作用使湍动能降低，但挤流作用使气缸中部的湍动能升高；

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at the end of compression stroke, the turbulent kinetic energy of flow around the edge of cylinder is weak, while that of squish in the middle is relatively strong.

压缩上止点附近气缸边缘的湍动能很弱，而气缸中部挤流区域的湍动能则相对很强。

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with the increase of crank angle, the mean kinetic energy of in-cylinder turbulence during compression stroke decreases at first, then increases and finally decreases again.

压缩过程中缸内气体的平均湍动能随曲轴转角的增大呈先减小后增大再减小的趋势。

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results show that turbulence intensity near the top dead center of the compression stroke under the inlet pressure at highland is obviously lower than that at sea-level.

结果表明，在模拟高原进气压力时，压缩上止点附近燃烧室内的湍流强度比在平原进气压力时明显下降。

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intake-generated tumbling motion has been recently proposed to enhance the turbulence level during compression stroke to promote the combustion rate and reduce operation variations.

最近倡议利用滚转运动增强引擎中之紊流强度，以增进燃烧效率与降低运转变异性。

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the result shows that tangent turbulence intensity is nearly the same from the outer to the center of the cylinder in the compression stroke.

结果表明在压缩过程中，从缸心到缸壁，切向湍流强度值大体相同。

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the experiment is successful and the result shows that high turbulence intensity is reached at the end of compression stroke in the new type combustion chamber.

结果显示：在压缩终了附近，这种新型燃烧室中的紊流场具有高的紊流强度。

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then diesel fuel oil is injected or sprayed into the cylinder at the end of the compression stroke.

然后在压缩冲程即将结束时，柴油燃料被喷射或被喷雾进入气缸。

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a diagrammatic method is employed to compute shock absorber force at compression stroke.

提出了计算压缩行程减振器阻力的图解法。

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a study of the in-cylinder flow in diesel engines during the induction and compression stroke

柴油机进气和压缩过程中气缸内流动的研究

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and that the simulation results of the compression stroke present the differences between both kinds of turbulence models.

对平顶活塞及带坑活塞压缩过程的模拟结果，显示了两种湍流模型的差异。

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a method for predicting in-cylinder gas motion during the compression stroke

预测压缩冲程期间气缸中气体运动的方法

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i once had a heart full of tender feelings. but fortune has knocked me about.

我曾经有一颗充满温柔的同情心，但是命运残忍地对待我。

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she can tell you full of tender feelings, but a stab dignity words is enough to freeze all passion.

她会告诉你充满柔情，而是一种尊严的话刺足以冻结所有的激情。

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quality control and evaluation methods of portland cement concrete compression strength with standard deviation requirements

有标准差要求的混凝土抗压强度质量控制与评定方法的研究及其运用

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the compression strength will increase with the increase in neutrality depth.

抗压强度的变化值随着中性化深度增加而增加。

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experimental study on the relation between compression strength of sandstone and interval transit time

砂岩抗压强度与声波时差关系的实验研究

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comparative research of size effect on compression strength of normal concrete and light aggregate concrete

普通混凝土和轻骨料混凝土强度尺寸效应的对比研究

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experimental study on the axial compression strength of cs wall slabs

CS墙板轴心受压承载力的试验研究

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