本文以一起船舶油污事故的溢油源调查为例,简述了重复性限法、t检验法两种方法的判定原则及判定流程,具体介绍了两种方法在船舶油污事故溢油源鉴定中的应用。应用结果表明,重复性限法、t检验法是两种值得在船舶溢油事故鉴定中推广应用的判别方法,诊断比值的准确性是影响两种判定方法应用的一个重要因素。 In this paper, a survey of oil spill originated from ship oil pollution accident is taken as an example to describe the principle of determination and the decision process of two methods of repetitive limit method and t test. The two methods are introduced specifically in the identification of oil spill source Applications. The application results show that the repeatability limit method and t test are two discriminant methods which are worthy of popularizing and appraising in marine oil spill accidents. The accuracy of diagnostic ratio is an important factor affecting the application of the two methods.