| 词条 | Engine shaft |
| 释义 | {{Multiple issues|{{Unreferenced|date=December 2009}}{{Context|date=October 2009}} }} An engine shaft is a mine shaft used for the purpose of pumping, irrespective of the prime mover. {{Engineering-stub}}{{Mining-stub}} 1 : Underground mining |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。