连心线 meaning in Chinese

line of centers
line of centres

As one part of the research program of study on reliability of stability of high rock slope and optimization of support , the thesis does further study on blasting and achieves some results as follows : ( 1 ) the interaction of shock wave and explosive gas due to blasting is the important cause to the destroy of the rock . the rock in the line of every hole is easiest to be destroyed while single - row blasting . dynamic loads of blasting can be simplified to triangular loads
本文作为“岩质高边坡稳定可靠性与支护结构优化研究”研究课题的一部分，对边坡工程中的爆破施工进行了深入的研究，主要取得了以下成果： ( 1 )冲击波和爆生气体的共同作用是引起岩石破坏的重要原因；单排爆破中炮孔连心线上最容易破坏；爆破动力荷载可以简化成三角形荷载。