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取心钻头 qǔxīn zuàntóustresses
dril. колонковое буровое долото
O&G, oilfield. керновое буровое долото
oil буровая коронка для колонкового бурения; коронка для бурения кольцевым забоем; колонковое долото
tech. колонковый бур
取岩心钻头
el. буровая колонка керна
取心钻头
: 8 phrases in 2 subjects
Drilling3
Oil / petroleum5

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