volcanic crater火山口
crater crack弧坑裂纹;火口裂纹;焊口裂纹;宏观试样
Ngorongoro Crater火山口;恩戈罗恩戈罗火山口;世界第八大自然奇迹
adventive crater寄生火口;侧裂火山口;[地质] 寄生火山口
Gagrin Crater加格林坑;格林陨石坑;表面最深的加格林坑;减格林坑
primary crater初级陨击坑;原生月坑;低级陨击坑
secondary crater次级陨击坑;次级撞击坑
blasting crater[矿业] 爆破漏斗;爆破漏斗
parasitic crater寄生火口;寄生火山口
With the ore mining of Dahongshan Copper Mine as an example, this paper introduced sys-tematically the theory and test method for determining the drilling and blasting parameters of longhole mining by the results of series blast crater tests.
通过大红山铜矿的矿石回采实例，系统介绍了利用系列爆破漏斗试验确定中深孔采矿凿岩爆破参数的理论与试验方法。
These results reveal the mechanism of crater formation on the surface and hardness characteristics along the depth.
通过合金的数值模拟结果和实验结果对比,揭示了表面熔坑的形成机制和剖面硬度分布特征。
参考来源 - 2195铝锂合金焊接热裂纹敏感性和焊接材料研究N-COUNT（可数名词） A crater is a very large hole in the ground, which has been caused by something hitting it or by an explosion. (撞击或爆炸形成的) 大坑
The explosion, believed to be a car bomb, left a ten-foot crater in the street.
这次爆炸，据说是一个汽车炸弹引起的，在街道上留下了一个10英尺的大坑。