tubing string的用法和樣例：
例句
- Research and analysis have been made for buckling of long pipe string under gravity.
詳細分析和研究了自重作用下豎直長管柱的屈曲問題。 - The contraction force will be produced in unsetting of hydraulic packer by lifting tubing string because of effect pressure and pumping and so on.
採用上提管柱解封的液壓式封隔器管柱，由於壓力效應及泵抽等因素影響，將產生一定的收縮力。
