sucherˈsətʃərCOCA¹⁶⁵⁹⁴⁰ 基本例句 n.苏赫尔¹⁰⁰ On the basis of the analysis of the twisting vibration of rotary sucher- rod string, a formula of calculating every harmonic vibration eigenfrequency is presented. 在对旋转抽油杆柱的扭转振动分析的基础上，给出了各阶扭转振动固有特性参数的计算式。 dictall