纯钻时间利用率就是纯钻进台时与计入台月台时的百分比。计入台月时间由三部分组成,即纯钻进台时、辅助台时、事故及停待台时。计入台月时间与不计入台月时间之和是一定值(即日历平均天数30天乘 The utilization ratio of pure diamonds is the percentage of pure diamonds entering the stage and counting into the platform. Into the Taiwan month time consists of three parts, namely, pure drilling into Taiwan, auxiliary Taiwan time, accident and waiting time. The total sum of the total monthly calendar days and the total monthly calendar months excluding the monthly calendar days is a certain value