何为LTPD抽样方案？

Lot Tolerance Percent Defective (LTPD), expressed in percent defective, is the poorest quality in an individual lot that should be accepted. The LTPD has a low probability of acceptance. In many sampling plans, the LTPD is the percent defective having a 10% probability of acceptance using an accepted sampling plan. With this plan, the producer agrees to produce just enough nonconforming product such the consumer will accept the lot using the agreed to sampling plan and AQL level. ?