Rod strings are designed by computing compound stress with the fourth strength energy on the condition of torque and axial force.
应用第四强度理论,求解杆柱在扭矩和轴向力条件下的复合应力,设计抽油杆柱。
参考来源 - 地面驱动单螺杆泵举升系统工艺设计·2,447,543篇论文数据，部分数据来源于NoteExpress
Because guilt trips compound stress.
因为内疚之旅包含压力。
To compound stress levels further, it appears anyone equipped with the latest versions of smart phones can never escape the office.
人们装备了最新版的智能手机确保永远在线，来应对各种各样的压力。
Rod strings are designed by computing compound stress with the fourth strength energy on the condition of torque and axial force.
应用第四强度理论，求解杆柱在扭矩和轴向力条件下的复合应力，设计抽油杆柱。
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