【摘要】 优选石油机械零部件的可靠度，为设计提供合适的可靠性指标，是石油机械可靠性设计的关键。应用模糊优选可靠度基本原理，提出了石油机械零部件可靠度的模糊优选方法。对绞车滚筒轴可靠度的优选计算，表明该方法简便实用。更多还原

【Abstract】 It is a key to designing parts of petroleum machinery to optimize their parameters, in particular, reliability index. A method for fuzzy optimization is derived and discussed based on the fuzzy theory. As an example,the reliabitity level of the drawwork’s reel shaft is selected by the method,which indicates its simplicity and practicability.更多还原