道井 meaning in English
doi
michii
pilot shaft
Examples
- Supervisors on the ground can know real working conditions of all powered supports in fully mechanized coal face at any time . modernization of management on the ground to powered supports is realized by using this system
使用该系统管理人员在地面随时可知道井下各支架的实际工作状况，实现了工作面综采支架的地面现代化管理。