drill bit cutoff的意思|示意
美 / dril bit ˈkʌtɔ:f /
英 / drɪl bɪt ˈkʌtˌɔf /
钻头额定进尺数
drill bit cutoff相关例句
The present technique is a new thin cutoff wall construction method by modifying the original method as to use flat drill bit instead of cross bit and adopt positive and negative circulating system.
冲切成槽薄壁混凝土防渗墙施工技术是在原冲击成槽建造防渗墙的基础上，对冲击钻头和施工工艺加以改进，用扁钻头代替十字钻头，用正反两种循环系统进行泥浆循环的一种新防渗墙施工方法。