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chisel drilling bit
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强调
油和气
плоское ударное буровое долото
(
MichaelBurov
)
生产
зубильное долото
(
Yeldar Azanbayev
)
石油和天然气技术
плоское ударное долото
drag-
chisel drilling bit
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油田
плоское ударное буровое долото
chisel-drilling bit
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石油/石油
плоское ударное буровое долото
chisel drilling bit
:
2 短语
, 1 学科
石油/石油
2
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