.33 means a defect rate of 60 parts per million (PPM)
SMTnet Express March 21, 2013, Subscribers: 26266, Members: Companies: 13317, Users: 34462 Low Cycle Fatigue Behaviour of Multi-joint Sample in Mechanical Testing by: C.P. Hunt, O. Thomas, D. Di Maio, E. Kamara, H. Lu; National Physical Laboratory
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