drilling string meaning in English

钻杆柱
钻柱

Prediction of drill string ' s fatigue life under torsion and axial vibration
纵向振动下的疲劳寿命估算
Torsional vibration simulation analysis of drilling string and rock bit
钻井用钻头和钻柱扭转振动的仿真分析
Study on the lateral vibration rule of drilling string under reversion
对钻柱在反转情况下横向振动规律的研究
Vibration absorber for drilling string
钻柱减震器
New method for geometric nonlinear analysis of large displacement drill strings
一种新的大位移井钻柱几何非线性分析方法

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