The proposed instability criterion can be used to analyze the instability of coal pillar, i. e. coal pillar rock burst.
建议的失稳判据，可以用来分析煤柱的不稳定，即煤柱岩爆。
The plastic instability, i. e. multiple necking fracture before the fragmentation was fundamentally analyzed, and the fragments distribution was obtained from the energy balance theory.
对无氧铜在破碎前出现塑性失稳——多重颈缩进行了初步分析，利用能量平衡的破碎理论给出了无氧铜环的破碎分布。
The plastic instability, i. e. multiple necking fracture before the fragmentation was fundamentally analyzed, and the fragments distribution was obtained from the energy balance theory.
对无氧铜在破碎前出现塑性失稳——多重颈缩进行了初步分析，利用能量平衡的破碎理论给出了无氧铜环的破碎分布。
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