This paper presents a theoretical analysis about the propagation rule of the micro-crack in brittle materials under axial compression, based on the energy release rate criterion.
本文利用混合型裂纹扩展的能量释放率理论对脆性材料受轴向压缩时其内部微观裂纹的扩展规律进行了研究。
The east pacific rise, west of south america, has a high separation rate but no axial rift.
南美西部东太平洋洋隆具有高的分离速率，但是没有轴部裂谷。
Curves of total vaporization rate of fuel and vaporization rate per unit length as functions of the axial distance of combustor for given rocket engine are also presented.
文中还给出了燃料总蒸发速率和单位长度上的蒸发速率随该发动机燃烧室轴向距离变化的曲线。
Influences of different radial and axial feeding speed on the radial and axial rolling force, growth rate of diameter and temperature have been systematically analyzed and proved by trials.
同时对不同的径向和轴向进给速度对径轴双向复合轧制过程中轧制力，直径增长速率及温度分布的影响进行了系统分析，并进行了相应的实验验证。
The optimal mathematical models on the axial optimum temperature and maximum synthetic rate for a continuous heat exchange ammonia converter were established.
建立了连续换热式氨合成塔轴向最佳温度和最大合成率的优化模型，采用牛顿迭代法和龙格-库塔法对模型进行了数值解。
The orbits of an electron in self-fields, linear wiggler and axial fields are calculated. Then the spontaneous emission coefficient and the growth rate of the stimulated scattering are obtained.
本文计算了在平衡自场、线性摆动器场和轴向磁场作用下的电子轨道，并由此求得有线性摆动器的自由电子激光器的自发辐射和受激辐射。
It was revealed that the compressive strength of nanotubes, such as the critical axial load, is related to applied strain rate and also affected by temperature especially by lower temperature.
发现纳米管的压缩强度，如临界轴向内力在低温下受温度影响明显，并且和应变率的大小有关。
Based on the random error formulas of function, the error transfer formulas of acceleration at the vehicle mass center and axial angular rate were provided which were helpful.
根据函数随机误差公式，给出了载体质心处线加速度和轴向角速度误差传递公式，有利于惯性系统传感器的选择及系统的组建。
On the basis of relationship between bolt axial stress and rate of change in ultrasonic wave transmission time, the author has developed a device to directly measure axial stress in bolts.
根据螺栓的轴向应力与超声波传播时间变化率的关系，作者研究了一种可直接测量螺栓轴向应力的仪器。
The node axial force and radial force decreased with the time increased and the change rate of the node stress at the center was less than that at the circumference.
节点轴向力、径向力均随时间的增加而减小，而且节点应力变化速率在中心区域小于圆周处。
In addition, this paper presents how the diameter reducing rate, the die semicone angle, the friction coefficient and the original wall thickness influence the buckling and the axial elongation rate.
并分析了缩径率、缩径凹模半锥角、摩擦系数、缩径管坯初始壁厚对管端翘曲和轴向伸长率的影响规律。
In the light of characteristics that horizontal hole possesses a certain rate of curvature, the method of estimating minimum axial force at any point along a rod string is established.
针对水平井井眼具有一定曲率的特点，建立了抽油杆柱下部任意一点最小轴向力的计算方法。
In this range of air-water ratio the flow rate of mixture slightly decreased, the axial power increased linearly and the pump efficiency increased parabolically with a rise in effective head.
在稳定工作区范围内，不同的含气量条件下，随着排出压头的增加，混合液总量稍有下降，轴功率直线上升，效率呈抛物线变化。
Under the same condition, the axial mixing rate is 3.5 times of the lateral.
相同条件下，轴向混合速度是径向混合速度的3.5倍。
By means of numerical simulation, the research on inner-flow of mining contra-rotating axial flow fan working under low flow rate condition was made.
通过数值模拟手段，对一矿用对旋式轴流式通风机小流量工况内部流动进行了深入研究。
With the theory of finite element method, the simulation calculation is conducted for the axial pressure distribution law, the leakage rate and the pressure variation of the seal rings.
利用有限元法理论，对密封圈的压力沿轴向的分布规律、泄漏量与压力变化关系进行了模拟计算。
Gas composition, volume flow rate, axial power, pressure and temperature of inlet and discharge gases of the compressor have been evaluated with the international general standard.
采用国际通用标准对压缩机气体组成、容积流量、轴功率、进排气压力和进排气温度等指标进行了测定。
The reasonableness and practicability of way direct to monitor the blowing rate of axial fan have been verified in the article.
对电厂动调轴流式风机，用运行风量直接监测方法的合理性与可行性进行了论证。
The experiment result of the sintered metal tube shows that the uneven rate of axial blowing is lower than 10%, and the flow is steady.
烧结金属筒实测结果显示，吹风径向不匀率小于10%，且气流稳定。
It was observed from examples that eccentricity of drill string had major effect on the axial flow rate of Power-law screw fluid when the other parameters were invariant.
从算例可以发现：在其它参数不变的情况下，钻柱的偏心对幂律流体螺旋流轴向流量的影响非常大。
The grading of involvement of the vessel on axial images or reconstructed images correlate with the grading on surgical findings(correlation rate is 0.700 or 0.786).
轴位图像分级与重建图像分级都与手术分级有相关性（相关系数分别为0.700、0.786）。
The device has the advantages of uniform rolling force distribution, remarkably-reduced axial force, high product qualification rate and flexible and convenient process arrangement.
它轧制力分布均匀，轴向力显著减少，成材率高，工艺安排灵活方便。
The variation laws of axial thrust with flow rate are found.
得到了轴向力随流量变化的规律。
The numerical results show that the transverse resolution, the axial resolution, and the intensity of the spot increase as the rate of fluorescent wavelength to illustrated wavelength increases.
研究了不同荧光波长对双光子荧光共焦显微镜横向、纵向分辨率和光斑强度的影响。
When the axial static pre-stress is a constant, the impact compressive strength increases with an exponential function as the strain rate increases.
相同轴压下，冲击强度会随着应变率的增加而增加，呈现指数函数关系。
It has been found that the pressure drop of the distributor has little influence on the axial apparent solids concentration in upper dilute region and on the external circulation rate.
研究同时发现，分布板压降对稀相区轴向颗粒浓度和颗粒循环量无影响。
After deprivation is removed during the chicken development period, myopic refractive power decreases, and axial growth rate slows down.
在幼鸡发育期间去剥夺后，近视屈光度减低，眼轴增长速度减慢。
Thread cutting. When performing thread cutting, the axial feed must be kept at a constant rate, which is dependent upon the rotational speed (RPM) of the workpiece.
在螺纹切削作业时，轴向进给必须保持恒定速率，这取决于工件的转速(rpm)。
Thread cutting. When performing thread cutting, the axial feed must be kept at a constant rate, which is dependent upon the rotational speed (RPM) of the workpiece.
在螺纹切削作业时，轴向进给必须保持恒定速率，这取决于工件的转速(rpm)。
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