The results showed that for the same material and the same iodine concentration, the rate of crack propagation increased with increasing temperature.
结果表明:对于同种材料在相同的碘浓度下,随着温度的升高,裂纹的扩展速率加快。
The effects of temperature and equivalence ratio of supersonic premixed combustible flow on the structure of supersonic combustion flow field, ignition and flame propagation were studied.
研究了超声速预混可燃气流的温度以及当量比对超声速燃烧流场结构、点火与火焰传播特性的影响。
The results have shown that the incubation period of crack nucleation decreases and the propagation rate of crack increases with increasing the cyclic temperature.
试验结果表明,随着循环温度的增高,裂纹形核孕育期缩短, 裂纹扩展速率增大;
The incubation period of crack nucleation decreases and the crack propagation rate increases with the increase of thermal cycling temperature and cooling rate in the cycle.
随循环温度和冷却速率的增加,裂纹形核的孕育期缩短,裂纹扩展速率增加。
In the course of acoustic-gravity wave (AGW) propagation, a coupling relation between the ozone density oscillations (ODO) and temperature fluctuations (TF) in the lower thermosphere is presented.
本文求出了声重波传播过程中,低热层臭氧含量振荡和温度场起伏间的耦合关系。
The effects of temperature and stress on the initiation and propagation of cracks are investigated.
研究了温度和应力对裂纹产生和扩展的影响。
The results show that the properties resistance to plastic deformation and crack propagation of the experimental steel both reduce along with temperature drops.
结果表明,该试验钢的抗塑性变形能力、抗裂纹扩展能力均随温度降低而降低。
The study work is focused on the effect of temperature upon mechanical properties, creep, initiation and propagation of fatigue crack for the valve material.
着重温度对气门材料的力学性能、蠕变和疲劳裂纹形成与扩张的影响等问题进行分析和研究。
This test system can measure critical currents of high-temperature superconductor at different temperature, and can also measure quench propagation property.
本测试系统不仅可以测量高温超导体在不同温度下的临界电流,还可以测量其失超传播特性。
D temperature field determination of pulverized boiler based on radiative propagation and projection reconstruction model provides a new technique for power plant combustion diagnosis.
基于辐射传递模型和投影重建技术的图像法温度场测量为研究电站锅炉燃烧工况的变化,进行燃烧诊断提供了新的手段。
The variation of combustion velocity, fired gas temperature and flame propagation speed, when the press, excess air ratio and ignition timing changed, was calculated by this quasi-dimensional model.
此模型能根据实测的燃烧压力曲线计算出层流燃烧速度、已燃气火焰温度及火焰传播速度等参数随压力、当量比、发动机转速、点火提前角的变化规律。
Acoustic wave propagation technology has a very wide application. The technology of temperature gradient acoustic wave controlling is used to achieve more and more cause for concern.
声波的传播技术在众多领域有着广泛的应用,其中利用温度梯度分布实现声波传播控制的技术近年来引起人们的关注。
And the effect of limit concentration and concentration of the medium at normal temperature on the dynamic control process of crack propagation is also discussed.
并对极限浓度及常温下介质浓度对裂纹扩展的动力学控制过程影响进行了讨论。
To explore the influence mechanism of temperature decreasing on crack propagation, firstly the effect of rock parameters change caused temperature decreasing on the crack propagation is analyzed.
首先分析在温度降低过程中岩石物理力学参数随温度变化对裂隙扩展的影响;
Wind direction, wind velocity, air temperature and air pressure have a very great effect on the propagation of pressure waves.
风向、风速、气温和气压对压力波的传播有十分巨大的影响。
Wind direction, wind ve lo city, air temperature and air pressure have a very great effect on the propagation of pressure waves.
风向、风速、气温和气压对压力波的传播有十分巨大的影响。
The addition of thorium promoted the chain propagation at low reaction temperature, but had little effect on methane selectivity and light hydrocarbon.
烃分布研究表明:反应温度较低时钍助剂将促进产物链的增长和高碳烃选择性的增加,但反应温度较高时难以促进产物链的增长。
The crack propagation rate of pipes is mainly dependent on FATT of Steels of pipes (fracture appearance transition temperature). And FATT can be measured by drop weighted tear tests.
管道裂纹的扩展速度主要取决于管道钢的转变温度FATT。FATT可由落锤撕裂试验测定。
Clearly models for ultrasonic generation and propagation in anisotropic materials must include the effect of anisotropy and temperature on the dispersive wave propagation.
分析各项异性材料中超声产生和传播的模型必须包括各向异性和温度对波传播中色散的影响。
The temperature of duplex annealing has little influence on fatigue crack propagation behavior.
该合金的疲劳裂纹扩展速率对退火温度不敏感。
Tempering temperature remarkably affect the threshold value of fatigue crack propagation.
回火温度对该钢的疲劳裂纹门槛值影响显著。
Tempering temperature remarkably affect the threshold value of fatigue crack propagation.
回火温度对该钢的疲劳裂纹门槛值影响显著。
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