“shaft drilling”的概念、定义、翻译、参考文献-科学参考

单词	shaft drilling
释义	shaft drilling Encyclopedia 工学竖井施工方案释 shaft drilling竖井凿岩竖井施工中，在井筒围岩上钻凿炮孔的作业。是竖井掘进中的一项主要工序，约占整个掘进循环时间的20%～30%。
随便看	Timar System Timaru timber timber beam timber bridge timber carrier timber circulation timber circulation management system timber column timber composite beam timber composite column timber cutting combine machine timber drier timber frame timber harvesting timber hybrid structures Timberlake Wertenbaker timberline change timberline/treeline timber members timber price timber production forest timber production machinery timber revenue timber structure system

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。