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◎ 鉆桿 zuàngǎn[drill pipe;drill rod;drill stem;boring bar;boring rod] 鉆孔工具中連接鉆頭、用以傳遞動力的桿件
1.bull rod; bar; rod; drill stem; drill pipe; jackrod (手持式風(fēng)鉆); bore rod; boring bar; drilling rod; drilling pipe; drill rod
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