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Ụlọ
Ngwaahịa
Ngwa ịkwọ ụgbọ mmiri ejiri aka
Ngwa eji egwu mmiri Tapered
Ngwakọta Ngwakọta
Ngwá Ọrụ Ịkụba Hama kacha elu
Drifting na Tunneling
Ngwunye Bench
Ime ọkụ
Shank nkwụnye
Ngwa mwupu DTH
Ọnụ ego DTH
DTH ọkpọkọ ọkpọkọ
DTH Hammers
Ihe nkwụnye DTH
Nkwụnye ego karịrị akarị
Mgbapu ntọala
Ngwa Ngwuputa
Ngwa Ngwuputa Ngwuputa Elu
Ngwa Trenching
Nhọrọ conical maka ndị na-akụpịa ihe
Nhọrọ conical maka ndị na-akpụ akpụ
Radial
Nkume egwu egwu
Nkuku nkume ejiri aka
Nkuku ume nkuku-ụkwụ
Sistemụ arịlịka
Gwuo ígwè
Ngwa eji egwu mmiri Rotary
Bọtịnụ Bit-egweri
Akụkọ
Ajụjụ
Gbasara anyị
Njem ụlọ ọrụ
Asambodo
Kpọtụrụ anyị
Ụlọ
Ngwaahịa
Ngwa eji egwu mmiri Rotary
Ngwa eji egwu mmiri Rotary
Tricone rock bit
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