the well under coal mine的用法和樣例：
例句
- In the mine drainage system many drainage pumps must work correspondly.
摘要在煤礦井下的排水系統中，需要多臺排水泵協(xié)調地工作。 - The research on probing into water bearing structure and watery of fore and lateral survey under coal mine is made by TEM.
利用瞬變電磁法在煤礦井下巷道開(kāi)展了超前和側向探測含水構造及富水性的試驗研究。
