drill-stem subs

基本解釋

• [能源科學(xué)技術(shù)]鉆柱轉(zhuǎn)換接頭

英漢例句

雙語(yǔ)例句

• It shows that the fractures of drill-stem subs are ascribed to outside diameter and the irrational bend strength between inside and outside threads.
  通過(guò)分析計(jì)算認(rèn)為，鉆柱轉(zhuǎn)換接頭斷裂原因與外徑不符合標(biāo)準(zhǔn)及內(nèi)、外螺紋接頭彎曲強(qiáng)度比不合理有關(guān)。

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專業(yè)釋義

能源科學(xué)技術(shù)

• 鉆柱轉(zhuǎn)換接頭