查询词典 nozzle

The law of the influence of contractive angle of taper nozzles and curvature radius of convergence nozzles' convergent section on jet structure parameters is revealed, and it can provide a basis for optimization selection and design about laser cutting nozzles.

揭示锥型喷嘴收缩段收缩角、收敛型喷嘴收敛段抛物线曲率半径对射流的流场结构参数的影响规律，为激光切割喷嘴的优化选择和设计提供有效依据。标签激光技术激光切割会聚型喷嘴流场结构流体动力学 laser technigue laser cutting assemble nozzle jet structure hydrokinetics

The determination of the collocation place of metal wires, the principle of choosing the quantity of wires and the initial grain type and the ratio of initial burning surface to throat area are stated.The local ablation of thermal insulation barrier in nozzle convergence region and of throat insert is analysed.

论述了金属丝布置位置的确定及金属丝根数的选择原则；初始药型及初始面喉比的选择；分析了喷管收敛段绝热层及喉衬的局部烧蚀问题；阐述了过渡段燃面变化的计算方法，并附有计算机程序。

A certain type of nozzle spray cooling effect has been simulated, simulated and measured results agree better.

对某种型号喷嘴的喷淋冷却效果进行了模拟，模拟结果与实测结果吻合得较好。

In the large yield stage, geometric nonlinear effection improves the stress condition of nozzle corner, and reduces stress concentration factor.

在较大屈服阶段，几何非线性效应改善了接管拐角处的受力情况，使应力集中系数有所下降。

The results showed that increasing nozzle radius and number of nozzles could expand corona region and strengthen discharge intensity.

结果发现：喷嘴半径和个数的增加能够扩大电晕区域，同时提高放电强度。

Internal performance of unsteady flow of counterflow thrust vectoring nozzle has researched base on numerical simulation.

基于数值模拟方法，研究了逆流矢量喷管非定常内流性能。

Where A is the nozzle cross-sectional area, v is the velocity of the flow.

如果是喷嘴的截面积， V是速度的流动。

It is found that there is a critical value (25mm) for the distance from the nozzle to the skin surface when the spray time is 40 ms. If the distance is too far or too near, heat extraction process will have different characteristics. The results could provide an applicable method for guiding the Cryogen Spray Cooling of laser therapy.

发现喷雾时间在40ms时，喷嘴到皮肤的距离具有一临界值（25mm），大于或小于此距离喷雾与皮肤的换热作用具有不同的特性，研究结果对于将制冷剂喷雾冷却实际应用于激光治疗鲜红斑痣手术具有重要的指导意义。

The cooling process involves complex droplet evaporation, strong convective heat and mass transfer, therefore a deep understanding of spray characteristics is essential to optimize the nozzle design and improve the cooling efficiency of the spray. This paper presents a theoretical model to describe the equilibrium evaporation process of a single droplet in cryogen spray.

为了深入了解制冷剂喷雾特性以提高冷却效率、优化喷嘴设计，利用质量传递数法推导传质方程，通过选取合适的阻力系数经验关联式建立了动量方程，考虑液滴蒸发以及与环境气体的对流换热建立了液滴能量方程，初步建立了单个制冷剂液滴平衡蒸发阶段蒸发冷却理论模型。

Toner recycling the nozzle connecting pump, recovery by the clean blade from the toner drum curettement

墨粉回收吸嘴（连接抽气泵，回收由清洁刮刀从磁鼓上刮除的墨粉

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。