基本解释[能源科学技术]钻头给进机构英汉例句双语例句Start collaring with reduced throttle to the impact mechanism and feeding, let the bit work its way slightly into the rock.开孔时，应采用最小的冲击和推进力，使钻头平稳地进入岩层。bit feeding mechanism更多例句专业释义能源科学技术钻头给进机构