这个能量释放的不平衡，与很多工艺参数密切相关，如等离子弧压缩程度、切割速度及喷嘴到工件的距离等。
This energy release imbalance, closely related with many process parameters, such as plasma arc compression degree, cutting speed and nozzle to the distance, etc.
另外，过大的切割速度和过大的喷嘴高度都会引起切口上下宽度差的增加。
In addition, too much cutting speed and big nozzle height can cause and the increase of the poor incision width.
这个等式是其中一个最有用，因为它允许喷嘴出口速度计算。
This equation is one of the most useful, as it allows the nozzle exit velocity to be calculated.
所以，选用尽量小的喷嘴高度对提高切割速度和切割质量都是有益的，但是，喷嘴高度过低时可能会引起双弧现象。
So, choose as far as possible to improve the nozzle of small high cutting speed and cutting quality is useful, but the nozzle at low altitude may cause double arc phenomenon.
实验结果表明，在压力恒定的条件下，可通过控制喷嘴开启量大小获得不同的注射充填速度。
As a result, it was found that injection speed could be increased through varying nozzle port opening width under keeping constant injection pressure.
在双喷嘴矩形喷动床内，以空气为喷动气体，研究了最小喷动速度的变化规律和影响因素。
The change laws and influential factors of the minimum spouting velocity of a rectangular spouted bed with double nozzles were studied with air as spouting medium.
这说明喷嘴的结构对气化炉宏观气相流场的影响并不如入口速度对气相流场的影响显著。
Thus, the nozzle structure has less influence than the inlet velocity on the overall gasifier gas flow field.
对箱体设计进行外形及内部结构的改进后，箱体喷嘴出口的速度达到均匀。
Through improving the effects of the figuration and internal structure of box, the flow velocity of nozzle of water curtain system of box type is better even.
计算结果表明：使用导流叶片后，高压水通过喷嘴后具有了切向速度，并形成了较为明显的旋转射流。
Calculations showed that: with the guide vanes, the high-pressure water would have tangential velocity after it went through the nozzle and form more obvious swirling jet.
通过数值计算，得到了喷嘴出口自由射流与冲击射流情况下的流体速度、压力等参数分布情况，及这两种流场中的激波位置。
Through the numerical simulation, the distribution of those parameters such as speed, pressure of the free jet and impinging jet flow is obtained, also the position of shocks.
实验表明，双喷嘴矩形喷动床的最小喷动速度与颗粒粒径、床层高度及操作温度有关。
The experiment shows that the minimum spouting velocity was related to the particle sizes, bed height, and operational temperatures.
因此，要保持氢气的火焰在燃烧喷嘴连接到一个氢发生器的速度必须降低。
Therefore, to sustain a flame at a nozzle attached to a hydrogen generator the burning velocity of the hydrogen gas must be reduced.
数值计算表明，气体速度随入口段曲率半径的增大而增大，拉伐尔喷嘴和长度则随曲率半径的增大而减小。
The numerical calculation results show that the gas velocities increase with the reduction of curvature and the length of laval nozzle decreases with the increase of the radius of curvature.
喷嘴移动扫描速度对铜电铸层多孔结构有明显的影响。
The scanning speed of nozzle has a great effect on the pore structure of copper deposits.
研究结果表明：随着喷嘴直径的减小，射流核心段速度值越来越大，射流的散射角越来越小，射流的集束性越来越好。
The results show that with the reduction of nozzle diameter, the speed value of the core section is getting bigger, the scattering Angle of jet is getting lower and the focus of jet is getting better.
此类问题的解决方案，例如治具设计，基于DOE实验的喷嘴形状优化，热风速度控制等也将在本文中做出介绍。
The solutions on how to solve these problems, including fixture design, DOE based nozzle shape optimization, hot gas speed control, etc. will be introduced in this paper.
实验中发现，改变喷嘴型号、液体压力、机架移动速度和采用风助技术等，或人为地加侧风时雾滴的漂移性能都会改变，而作物的形态对漂移的影响不大。
The results showed that the nozzle type, droplet size, side wind, boom speed and air-assistance were related to the drift potential, but the plant canopy had less influence to the drift.
实验发现，星形喷嘴射流与普通圆射流相比，其射流初始段较短，但基本段内速度随喷距衰减的速率较低。
It is found that the star_shaped nozzle jet has a shorter initial section and slower velocity attenuation along the jet centerline in the main region than the round nozzle jet.
结果表明，脉冲喷嘴射流的外边界变化规律、等速核和无因次速度分布规律等均与普通射流有较大差异。
The results show that the external boundary, potential core and dimensionless velocity distribution curve are different from those of general jets.
使用小流量数喷嘴可显著改善大比重油的贫油点火性能，但点火的压力-速度边界和富油点火边界缩小了。
Using a small flow number atomizer may obviously improve the lean ignition limit of the high density fuel, but the ignition velocity-pressure limit and the rich ignition limit are shrunk.
以井底速度和压力作为目标函数，对旋转射流喷嘴结构参数进行了优化。
Taken the velocity and pressure at the bottom as the objective function, the structure parameters of rotary nozzle were optimized.
模型采用三层结构，输入变量有水射流压力、水喷嘴直径、磨料粒子粒度(直径)、磨料流量和切割头进给速度。
Three layers network topology is adopted. The input variables are water pressure, diameter of orifice, diameter of abrasive particles, flow rate of abrasive and feed rate of cutting head respectively.
改变喷嘴入口压力、钻头保径宽度、喷嘴直径等影响因素对改变井底漫流层和排屑槽内的速度都有作用；
The overflow tank level and the speed of both the role of Chip can be changed by changing the factors such as the nozzle inlet pressure, drill gage width, nozzle diameter of the PDC bit.
同时，运用流体力学原理，对冷却管路系统进行了理论计算，得到了喷嘴出口处的水流速度以及作用于钢板表面的冲击压力。
The impact pressure on the surface of product and the flowing velocity were calculated by hydromechanics theory, and the calculatio.
由空压机提供的气体通过一排微小直径的喷嘴进入静止水体，形成水气两相流流场。在单相PIV和PTV技术的基础上，研究稀疏气液两相流情况下气泡的速度场分布。
The gas phase was produced by air compressor and entered into still water in the model by little diametical nozzle on line, and the gas-liquid two phase flow field was formed.
系统研究了喷嘴保护气流速度、喷嘴出口距零件表面距离、喷嘴移动速度和侧风速度对气体保护效果的影响。
The influence of gas velocity from nozzle, distance between parts and nozzle exit, moving velocity of nozzle and crosswind velocity were systematically investigated on shielding gas field.
研究表明，当喷嘴的圆柱段长度是喷嘴出口直径的2 5 ~ 3 0倍时，粒子的速度能达到水射流速度的95%。
The study showed that when length of circular column part is 2.5 ~ 3.0 times outlet diameter, abrasive particle velocity near to 95% velocity of water-jet.
研究表明，当喷嘴的圆柱段长度是喷嘴出口直径的2 5 ~ 3 0倍时，粒子的速度能达到水射流速度的95%。
The study showed that when length of circular column part is 2.5 ~ 3.0 times outlet diameter, abrasive particle velocity near to 95% velocity of water-jet.
应用推荐