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下降漏斗
desert.	cone of depression (指地下水)
eng.geol.	cone of depression; cone of exhaustion
hydroel.st.	depression cone
oil	conical depression
tech.	cone of influence; cone of pressure relief (地下水)
地下水位下降漏斗
el.	drawdown cone
地下水下降漏斗
eng.geol.	drawdown cone
地下水面的下降漏斗
hydroel.st.	cone of exhaustion

下降漏斗: 15 phrases in 5 subjects

Desert science	1
Engineering geology	3
General	1
Hydroelectric power stations	3
Technology	7