line of weakness meaning in English

脆质线
弱线
最小抵抗线
最小强度线

Basing on the theory of shape geometry , the distribution of rock blasting fragmentation are discussed , fragmentation of blasting experimentation of different charging construction appears shape character , and the relation of explosive ratio , line of weakness and distribution of blasting fragmentation are confirmed by regression , the relation of function of explosive ratio of distant loading and consecutive loading are confirmed by contrasting different distribution of blasting fragmentation of charging construction , a new approach will be put forward for optimized of bore net parameter and forecast of distribution of blasting fragmentation
回归分析了爆破试验的炸药单耗、底盘抵抗线与爆破块度分维数之间的函数关系，对比不同装药结构爆破块度的分维数，得出了同等条件下间隔装药与连续装药炸药单耗差值的关系，以及装药结构对岩石爆破块度分布影响的规律。根据对岩石爆破破碎块度分布分形规律的研究，找出了预测孔网参数优化、爆破块度分布新的途径。