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活塞运动
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  piston motion
     COMPUTER SIMULATION OF PISTON MOTION FOR TYPE YT25DY PNEUMATIC ROCK DRILL
     YT25DY气腿凿岩机活塞运动的电算模拟
短句来源
     A Study on Method for Estimate Piston Motion Frequency of Free Piston Engines
     自由活塞发动机活塞运动频率计算方法研究
短句来源
     A series of formulae, which denote the kinematic parameters with the abstract design variable a , are derived according to the three-staged analysis method of the piston motion.
     根据活塞运动的三段分析法导出了用抽象设计变量α表示的运动学参数表达式,并以此为基础,系统研究了液压冲击机构各个组成部分的设计方法,导出了所有重要结构参数的设计计算公式。
短句来源
     This paper decribes the design of 12. 7 mm regenerative liquid propellant gun and gives the experimental pressure curves of the liquid reservior and combustion chamber. An interior ballistic model including the coupling relation between the piston motion, liquid jet and the liquid inertia in the liquid reservior is presented.
     介绍了12.7mm再生式液体发射药枪的设计,给出了贮液室与燃烧室实测压力曲线,提出了包括活塞运动与液体喷射之间耦合关系及贮液室中液体惯性的内弹道计算模型。
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     This thesis introduces the establishment of dynamic differential equation of the piston motion through dynamic analysis on the response of liquid damper under the Gauss white noise excitation.
     通过对液体阻尼器在高斯白噪声激励下的运动分析,建立活塞运动微分方程。
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  piston movement
     The relationship between the piston movement and the pressure of the accumulator was studied in this paper. The formulas of the impact energy and the frequency of the piston were established and the remaining terms were estimated for the purpose of correcting the energy formula.
     本文研究活塞运动与蓄能器压力之间的关系,导出了活塞的冲击能量和频率公式,并为修正能量公式而估计了余项。
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     The method of diagnose with experience for piston-knocking at cylinder is being introduced firstly in this paper, then we can get the result of relationship among piston-knocking at cylinder, structure parameter, revolutionary speed. Loading and viscosity of the lubricating oil by evaluating the equation of piston movement for CA1091'engine, So that, the favorable revolutionary speed of the engine which the piston-knocking at cylinder occurred, the sensor fixing position, loading and phase place would be diagnosed in term of theory.
     本文介绍了发动机活塞敲缸的经验诊断方法,通过求解CA1091汽车发动机活塞运动方程,得出了发动机活塞敲缸与结构参数、转速、负荷和润滑油粘度的关系,从理论上得到诊断发动机活塞敲缸的最佳转速、传感器安装部位、负荷和相位等。
短句来源
     The authors establish a mathematical model for the efflux hammer as well as a differential equation for piston movement in strike and backhaul phase.
     建立了活塞、冲锤在缸体内的运动规律,上下缸内液体状态变化的数学模型以及冲程和回程阶段活塞运动微分方程。
短句来源
     Grouting pressure is the resource of grouting energy, and is also a key factor of controlling grouting quality. Grouting pressure is motive of sending cement gout into small holes of geological strata designed beforehand, the motive is commonly produced by piston movement of grouting pump, reasonable and scientific grouting needs to choose a most ideal pressure, which is controlled by adjustable valve in the pipe of return grout.
     灌浆压力是灌浆能量的来源,是控制灌浆质量的一个重要因素,灌浆压力是将浆液输送到预定范围的地层空隙里的动力,这种动力通常是由灌浆泵活塞运动的驱使而产生的,合理科学的灌浆需要选定一个最适宜的压力,这种压力通常是通过返浆阀来控制的。
短句来源
     Analysis on the Pressure of Piston Movement in Clamping Circuit
     夹紧回路中活塞运动时的压力分析
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  piston moving
     THE SPHERIC-SYMMETRICAL SOLUTION OF A PISTON MOVING IN WEAK FIELD OF GRAVITATION
     弱引力场中活塞运动的球对称解
短句来源
     THE SPHERIC-SYMMETRICAL SOLUTION FOR A PISTON MOVING IN STRONG FIELD OF GRAVITATION
     强引力场中活塞运动的球对称解
短句来源
     2AB + C is employed as a working reaction system in which only C, not A or B, is adsorbed. By using dynamic simulation software gPROMS, the influences of bed length, cycle length, piston moving velocity, product delivery velocity and basal pressure on reaction and separation efficiency are investigated. [
     以 2A B +C为反应体系 ,其中C为易吸附组分 ,A、B为不吸附组分 ,利用动态模拟软件gPROMS模拟考察了反应器长度、周期长度、活塞运动速率、产品收集速率和基础压力对反应性能和分离性能的影响
短句来源
  “活塞运动”译为未确定词的双语例句
     This paper introduces the structural characteristics of SLG195 high speed diesel engine with large eccentric double crank connecting rod mechanism developed on the basis of S195 diesel engine and analyses emphatically the motional law of piston in the new type SLG195 diesel engine and its influences on working process of diesel engine.
     本文介绍了在S195型柴油机基础上开发的采用大偏心双曲柄连杆的高速柴油机SLG195的结构特点 ,并着重分析了SLG195新机型的活塞运动规律及对柴油机工作过程的影响。
短句来源
     Analysis and Computation on Movement of Diesel Engine Pistons
     内燃机活塞运动历程的计算和分析
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     The model connects piston and displacer by the damping factors due to interactive motion.
     该模型引入了排出器与压缩活塞运动对另一方运动产生的阻尼,从而将排出器与压缩活塞的运动连接起来。
短句来源
     Optimal Control of Motion for a Piston inside a Cylinder Containing Heated Working Fluid
     内含加热工质的气缸中活塞运动的最优控制
短句来源
     ZTW-A-02 friction slice is made through slicing a machining cylinder liner into four parts. The cylinder liner is composed of a vat of gray cast iron HT 250, which has a weight of 325 kg and bears the geometrical dimensions of 572 mm external diameter,455 mm internal diameter and(740 mm) length respectively.
     石油大型泥浆泵曲杆活塞运动付中,ZTW-A-02摩擦片,材质HT250,由外径φ572 mm,内径φ455 mm,长755 mm,重325 kg的缸套铸件,机械加工后切成4片制成。
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  piston motion
Self-similar nonstationary magnetohydrodynamic radiating gas flows caused by piston motion
      
Results are presented in this paper of an investigation of one-dimensional self-similar flows caused by piston motion in a hot gas mixture in which a detonation wave or combustion front is propagated.
      
The piston motion is explicitly included into the simulations by using a deforming mesh.
      
For an efficient operation with tuned piston motion, the design of facility and the comprehension of the physical phenomena in a FPST, a numerical simulation which can properly predicts the flow with actual losses is required.
      
The driver has a transparent window at the end of the compression tube to allow observation of piston motion.
      
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  piston movement
Then the static deflection as a function of driving voltage, resonant frequency and transient response are analyzed with respect to the piston movement along Z-axis.
      
A new approach to mechanical simulation of lung behaviour: Pressure-controlled and time-related piston movement
      
Amplitude of the piston movement up and down was 1.5 cm, time of the movement 1 min.
      
Control of fuel injection and valve opening independent of piston movement appears to be necessary for HCCI engines to be viable.
      
Control of valve opening independent of piston movement appears to be highly desirable for such engines.
      
更多          
  piston moving
The gas motion is bounded, on the one hand, by a piston moving in accordance with an arbitrary law, and, on the other hand, by either a compression shock or a rarefaction wave propagating through the gas with given arbitrary parameters.
      
A class of exact solutions which, in particular, describes the flows arising from the short intense impact of a piston moving under gas pressure is obtained.
      
The possibility of the fragmentation of a liquid piston moving with variable acceleration, due to air jets forming on its free surface and penetrating inward, is established experimentally.
      
The mixture is formed as a result of the Rayleigh-Taylor instability development and the tur-bulent mixing in a very thin layer of a liquid at the end of a piston moving with deceleration.
      
We analyze a gasdynamical process in the stellar atmosphere that is driven by a "piston" moving with constant velocity in a weak gravitational field.
      
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In this paper, we study the problem of the normal reflection of the plane shock wave on the piston. When the shock wave meets with the wall, the reflection phonomenon occurs immediately. Here we suppose that the wall is very thin, and we neglect its internal elastic and plastic waves, and thus consider it as a rigid piston. When the wall is shocked by the incident wave, it obtains an acceleration and moves. We study tne effect produced by the motion of the wall(piston)in a short time from the beginning. We use...

In this paper, we study the problem of the normal reflection of the plane shock wave on the piston. When the shock wave meets with the wall, the reflection phonomenon occurs immediately. Here we suppose that the wall is very thin, and we neglect its internal elastic and plastic waves, and thus consider it as a rigid piston. When the wall is shocked by the incident wave, it obtains an acceleration and moves. We study tne effect produced by the motion of the wall(piston)in a short time from the beginning. We use the auto-model solution (plane wave) of sharpened explosion for incident wave. We develop the physical quantities in the region of reflection into Taylot's series, and thus transform the system of partial differential equations obtained into a system of linear algebraic equations, and hence obtain the expressions of first approximation solution. Finally, we give two examples with which we analyze the effect produ ced by the motion of the wall in a short time from the beginning. The results obtained by calculation show that the magnitude of the etfect by the motion of the wall is determined by the non-dimensional initial acceleration of the wall: α_2(α_2=W_0t_1~2/R_0, where w_0 denotes the initial acceleration of the wall, R_0 the distance of tne center of explosion from the wall, t_1 the time that the wave needs to reach the wall from the beginning of explosion.) When |α_2| is very small (|α|≤0.5), the effect by the motion of the wall is very small.

本文研究平面激波在活塞上的正反射问题。当激波遇到固壁时,立即发生反射现象。我们假设固壁很薄,忽略内部的弹性波和塑性波,把固壁看成刚体的活塞。当固壁遇到入射波的冲击时,就产生加速度而运动。我们研究在反射初期,由于固壁(活塞)运动所产生的效应。我们采用点爆炸的自模拟解(平面波)作为入射波。本文将反射区物理量展成泰勒级数,以使偏微分方程粗化为线性代数方程组,从而求得解的一级近似表达式。最后给出两个例子,结合例子分析了在反射初期,由于固壁运动所产生的效应。计算结果说明,固壁运动效应的大小决定于固壁的无量綱的初始加速度α_2(α_2=(ω_0t~2_1)/R_0,其中ω_0为固壁初始加速度,R_0为爆炸中心位置至固壁的距离,t_1为爆炸开始至波到达固壁所需的时间。)当|α_2|很小时(|α_2|≤0.5),固壁运动的效应是很微小的。

The report is concerned with compression processes of free pistons after the opening of nozzle in a hypersonic gun tunnel. The nozzle flow will start at the time when the primary shock running ahead of the piston reaches the diaphram at the entrance of the nozzle and the piston starts to decelerate at the time when the shock reflected from the nozzle strikes it. The momentum equation for the motion of the piston and the continuity equation of mass of the gas are derived respectively, and the finite-difference...

The report is concerned with compression processes of free pistons after the opening of nozzle in a hypersonic gun tunnel. The nozzle flow will start at the time when the primary shock running ahead of the piston reaches the diaphram at the entrance of the nozzle and the piston starts to decelerate at the time when the shock reflected from the nozzle strikes it. The momentum equation for the motion of the piston and the continuity equation of mass of the gas are derived respectively, and the finite-difference calculations are carried out by computers.According to the results obtained, piston deceleration, overrush, rebound, oscillations, equillibrium running and peak pressure are discussed for various given initial conditions. It is shown that compression processes of free pistons after the opening of nozzle in a hypersonic gun tunnel are significantly different from those for a closed nozzle. The results are compared with those obtained with equilibrium technique based on closed nozzle and with some experimental data, and furnish important information for the operation of hypersonic gun tunnels.

本文考虑炮风洞喷管开放后的自由活塞压缩过程,建立了活塞运动方程和喷管流动方程,并采用有限差分法和电子计算机进行了计算.根据计算结果,讨论了在各种初始条件下,喷管开放后活塞的过冲、反跳、摆动及平衡运行和峰压等有关问题.并把这些结果与传统的以闭喷管为基础的平衡活塞运行技术及一些实验结果进行了比较,对有关炮风洞的调试工作提出了一些有意义的参考数据.

A new method of calculation is presented to solve the energy equations of the cylinder wall, the piston wall and the gas within the clearance. The temperature gradients are obtained due to the fact that the temperatures and heat flows on the interfaces are continuous. As a result, the transfer heat can be calculated. Some calculations and experimental data are presented.

本文提出了一个新的计算方法.把汽缸壁、活塞壁和它们之间气隙中气体的能量方程分别求解,并利用在界面上温度相接和热流连续的条件求出温度分布,由此可计算出活塞运动中传输的热量.文中列出了一些计算结果和几个实验数据.

 
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