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| 约束或约束度环境对炸药药包的约束效果。药包的约束取决于周围环境的岩石特性, 自由面的数量、方位、形状和对重力场的其他特性等等。不同倾角台阶约束度的估算可利用"固定因子 fixation factor ”得到，固定因子乘以实际抵抗线就可计算出对应约束度的抵抗线 | |||
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