查询词典 swirl

The air motion in umbrella curtain spray combustion system for diesel engine was studied using numerical analysis with the emphasis on the evolution of in-cylinder flow field, the interactions between swirl and squish and the effects of combustion chamber configuration.

用数值分析方法研究柴油机伞帘喷雾燃烧系统中的空气运动规律，探讨了缸内流场的演变过程、涡流与挤流的相互作用和燃烧室结构的影响，并比较了该燃烧系统与原机燃烧系统中的流场。

A large range of IRZ and intense fluctuating velocity area around the boundary of IRZ is measured and thought to be important to keep the excellent ignition and combustion characters of the new kind swirl burner. Together with temperature trace method, different structure and operation parameter of the burner are studied in this paper about their effects on turbulent and mixing characters of swirling jet. The structure variation includes different blade angle, use of central gear shape baffle, variable outer length and angle of lean primary air outlet, use of wedge outlet of lean primary air.

采用上述两种测量方法并结合热质比拟温度示踪的方法，本文对径向浓淡旋流煤粉燃烧器喷口结构和气流流动参数的变化对旋流流场的流动、混合、湍流脉动特性的影响进行了深入研究，研究了旋流叶片倾角大小、中心齿型扩锥、淡一次风扩口外伸长度和扩角的变化、淡一次风楔形扩口、直流二次风扩口角度的变化对出口旋转射流流动特性的影响，研究了一次风率和旋流二次风率运行参数变化的影响规律。

After implanted the physiological pacemakers, the cerebral ischemic symptoms of the patients including amaurosis, syncope, swirl and so on disappeared, cardiac dysfunction and the exercise capacity improved.

非生理性起搏器植入术后脑缺血症状消失率为84.2％，心功能不全发生率明显高于生理性起搏组，12.3％的患者有起搏器综合征。

After implanted the physiological pacemakers, the cerebral ischemic symptoms of the patients including amaurosis, syncope, swirl and so on disappeared, cardiac dysfunction and the exercise capacity improved. No pacing syndrome and no pacemaker intervened tachycardia was observed.

DDD起搏器植入术后患者脑血管缺血症状全部消失，心功能不全明显改善，运动耐量也明显提高，无起搏器综合征、起搏器介导的心动过速的发生。

It was found that there exists good agreement between them, so vane anemometry can reasonably evaluate total intake port swirl-producing ability.

分析了不同气道产生缸内总体涡流的能力，并与叶片风速仪的测量结果进行了比较，发现二者吻合较好，叶片风速仪能较好地评价进气道产生的总体涡流特性。

The hot-wire anemometry was also used to characterize the air flow patterns that were generated by high and low swirl port in a cylinder of a steady-flow rig. Some important phenomena of air flow in the simulative cylinder were found.

借助于热线风速仪研究了两种不同的螺旋进气道在稳流气道试验台的模拟气缸中产生的流场结构，发现了一些重要的现象。

ABSTRACT In this paper, an investigation on the helical ports was carried out in a steady-flow rig. The three velocity Components of air flow through the intake valve of several typical helical ports were measured by hot-wire anemometry for analysing the relationships between intake port geometry and swirl level as well as flow resistance.

本文在稳流气道试验台上对螺旋进气道进行了大量的研究，为了分析螺旋进气道的结构形状与涡流强度及流动阻力的关系，采用热线风速仪测量并分析了不同气道的气门口气体流速。

In order to research the flow mechanics inside tube inserted with twisted-leafs discontinuously,a mathematical model for turbulent flow resistance was developed,and the influence of the twist angle α and the swirl angle β on the form drag was analyzed by numerical simulation.

为了研究管内间隔插入旋流片的流动机理，建立了流阻数学模型，通过数值模拟分析了旋流片的旋转角α和旋流角β对j(形体阻力与摩擦阻力的比值)的影响。

About half of the human had swirl, headache, arthrosis and coon.

乳酸脱氢酶有7例在试验期间高于正常值。

The calculating method in this paper can be used to preestimate spray parameters of pressure-swirl atomizer.

本文所提出的计算方法可用于离心式喷嘴雾化参数的预估。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！