对脆性材料的切割机制进行研究，建立切割冲蚀模型，分析受冲击区的应力。
The mechanism of cutting brittle materials was studied, the impact model was established and the stress of impacting area was analyzed.
辊棒属脆性材料，清理时应避免敲击、撞击、冲击以及其它易产生机械性应力的方法。
The roller is part of brittle material, avoid to use the way in whack, bump, impact and other easily to make mechanical stress.
通过理论分析和系列冲击试验，对高锰钢出现的低温脆性损坏进行了分析研究。
The study of damage of low temperature brittleness on high manganese steel has been carried out by theoretical analysis and a series of impact tests.
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