spacing of joints meaning in English

接缝间距

After contrasting and analyzing the two common used measure method of discontinuity , a modified method that is elaborate method of joint surveying is put forward for the first time . rational method to get spacing of joints is researched utilizing lots of statistical results . according to the theory of minimal valid length of scanline , 5m is chose as appropriate statistical section length to obtain the successive values of those indices indicating rock mass structure , they are spacing , number and total length of joint
本文在对比分析目前两种常用的结构面测量方法优缺点基础上，首次提出了一种改进的结构面测量方法?节理详细精测法，并利用大量的统计结果，研究合理的间距取值方法，根据间距无偏差测量的最小有效测线长度理论，选择5m作为统计区间长度，获得了节理间距、条数、总长度随洞深的连续变化值。