成坑

表面因经常滴水而成坑。

The surface cratered with the constant dropping of water .

液滴撞击结构液靶成坑特点分析

Analysis of Crater Forming Characteristic by Liquid Drop Striking Structural Liquid Target

石灰岩中爆炸成坑和地冲击传播规律的试验研究

Testing Study on crater formed by explosion and propagation laws of ground shock in limestone

高速碰撞下弹坑的成坑规律研究

Formation of Craters By Hypervelocity Impact

它们最喜爱的活动是拱地，拱成坑以后有水时，在里面打滚；

Their favourite occupation seems to be digging massive craters in which they love to wallow when filled with water .

根据能量守恒定律，并通过对撞击能量转化过程的分析，得出了撞击成坑最大坑径公式。

According to energy conversation and the analysis of the impacting energy transformation , the equation of the cavity diameters is obtained .

表面因长年不断地滴水而成坑凹。深坑-一种晶圆片表面无法消除的缺陷。

The surface cratered with the constant dropping of water . Pit - A non-removable imperfection found on the surface of a wafer .

模拟结果同实验结果进行了比较，模拟的成坑形状和特征尺寸同实验相吻合。

The simulation results are compared with experimental results , and the simulated crater shapes and characteristic sizes are consistent very well with experimental results .

研究了弹丸密度、弹丸形状、板厚度、弹丸速度、弹丸直径和弹丸撞击入射角等对靶成坑的影响。

The effect of projectile density , shapes , target thickness , projectile diameter , impact velocity and angles etc. on crater has been investigated .

在分析的基础上，总结了舱壁的穿孔、贮箱的大中心孔和侵彻成坑范围等损伤特性随弹速变化的规律。

Based on analysis , variation laws of the bulkhead perforation , the large center hole in tank and the range of penetration pit according to speed changes are summarized .

系统分析了模型试验中预应力锚索内锚固段上所受的拖曳作用，认为产生原因主要是爆炸成坑作用时产生抵抗岩体抛掷的惯性力引起的。

The drag role of prestressed anchor interior bond section in the model test is analyzed systematically , which is caused by resistance of rock thrown during exploding into a pit .

声发射波形中的高频分量与低频分量幅值之比存在一个区别成坑模式与击穿模式的阈值。

A threshold value that divides the penetration and cratering in the failure modes of plates can be defined on the ratio of high frequency component amplitude to low frequency one .

作为两个实例，对导弹侵彻爆炸成坑过程和双排孔台阶爆破的岩石运动过程进行了模拟。

As two practical examples , the process of pit formation from explosion of a missile penetrated into ground and the process of rock movement in bench blasting with two-row holes are simulated . Exercise .

本文初步构建了结构从腐蚀坑成核、腐蚀坑扩展、小裂纹的扩展、长裂纹的扩展的多尺度腐蚀疲劳概率模型。

A multi-scale probabilistic corrosion fatigue model that composed of four stages : pitting nucleation , pit growth , short crack growth , and long crack growth was proposed in this thesis .