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lost returns
dril. 返出钻井液漏失
eng.geol. 漏失的冲洗液
lost return
dril. 泥浆进多返出少的井漏
oil 井漏
lose return
tech. 泥浆漏失
lose returns
eng.geol. 漏失冲洗液
lost returns
: 3 phrases in 2 subjects
Drilling2
General1