这是因为磁场线圈是在尖端的地方流向地面的，这些线圈的作用是为那些流失并超越弓形波的电子与质子提供通道。
This is because it is at the cusp that magnetic field-lines stream down towards the ground, acting as paths for electrons and protons that have slipped past the bow shock.
本文采用三维有限元模型分析了荷载作用下自上而下裂缝尖端的应力强度因子，并与二维平面应变模型分析的结果进行比较。
In this thesis, the stress intensity factors of top-down cracks caused by loading are calculated using three dimensional finite element model and compared to the results of plane strain model.
纤维对基体开裂起抑制作用并降低了裂纹尖端的应力集中。
Carbon fibers restrained the matrix cracks growth and diminished the crack tip stress intensity factor.
研究生教育是国家学历的尖端教育，导师对于研究生培养质量具有十分重要的作用。
The construction of research supervisor troops is an inseparable part in the postgraduate education and responsible to its high quality.
许多研究已被进行开发，试图解释在裂纹尖端的协同压力与环境的相互作用机制。
Many researches have been conducted to develop mechanisms trying to explain the synergistic stress-environment interactions at the crack tip.
建立了这两个区域的损伤断裂准则和裂纹尖端的损伤局部化模型，可以更好地反映爆生气体作用下裂纹扩展的实际过程。
The damage and fracture criterions and the damage localization models at the crack tip are individually established, which can better realize the true process...
锚杆作用可增强结构体的力学性能，降低裂纹尖端的应力集中现象，提高裂纹尖端裂纹的起裂荷载；
The role of bolts is to improve the performance of the structural mass, weaken the stress intensity at the crack tips and increase the crack propagating loads.
研究了四点弯曲型试件在各种类型载荷作用下的裂纹面位移，并考虑了裂纹尖端塑性区对它的影响。
A crack surface displacement of four-point-bend specimen under three types of loading is studied in this paper.
裂纹尖端前的断裂作用区域的存在被认为是以上方法估计不足的原因。
Existence of the FPZ (Fracture Process Zone) ahead of crack tip is proposed as the reason for underestimating interface toughness.
由数字图像相关方法所得位移场提取不同载荷作用下裂纹尖端应力强度因子，并分析最小二乘拟合项数、数字图像相关计算子区域和步长大小对计算结果的影响。
The stress intensity factor was extracted from the displacement field, and the effects of the number of terms, subset size and subset spacing on the calculation results were analysed.
原子力显微技术利用探针尖端与标本之间相互作用的力场对标本进行三维成像。
The interaction forces between the tip and sample is used to acquire 3-dimentional image of the samples in atomic force microscopy(AFM).
为了研究粘性效应作用下的扩展裂纹尖端场，假设扩展裂纹尖端的人工粘性系数与塑性应变率的幂次成反比，推导出理想弹塑性材料的一种率敏感型本构关系。
The strain fields in damage zone around crack-tip are measured for different strain hardening exponent material specimens with double edge cracks using digital speckle correlation technique.
对路面突然降温时的温度场进行了数值模拟，计算了温度应力作用下反射裂缝尖端的拉应力、应力强度因子，并对其进行了参数分析。
Crack top's tension stress and stress intensity factor caused by thermal stress were computed, structural parameters' sensitivity analysis were made as well.
对路面突然降温时的温度场进行了数值模拟，计算了温度应力作用下反射裂缝尖端的拉应力、应力强度因子，并对其进行了参数分析。
Crack top's tension stress and stress intensity factor caused by thermal stress were computed, structural parameters' sensitivity analysis were made as well.
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