单孔爆破 meaning in English

individual blast

( 2 ) according to the analysis to the single - hole model of blasting , the displacement of the nodes near blasting holes is large but decay rapidly . and this far away from blasting holes is relatively small , decay relatively slowly . after having rising rapidly , the speed of the nodes near blasting holes decays at once
( 2 )通过单孔爆破模型分析得出，炮孔附近节点位移幅值很大，衰减迅速，远离炮孔节点位移幅值较小，衰减较慢；炮孔附近节点速度迅速上升后马上衰减，远离炮孔节点表现出大阻尼振动性状。