分层审核：一种由组织中各级人员按照预先计划的频次定期参与评审并回顾整改为基础的标准化的评审过程，用以确保制造过程受控并加强精益制造理念。 There are two Types of Layered Process Audits: 有两种分层过程审核: Process Control Audits 过程控制审核 Error & Mistake Proofing Verification Audits 防错防误验证审核 Layered Process Audits (LPA) are a system of audits performed by multiple levels of management. Key process characteristics are audited frequently to verify process conformance. 分层过程审核(LPA)是由多个管理层进行的系统审核。对关键过程特性进行频繁的审核以验证过程符合性。 The purpose of Layered Process Audits is to ensure continuous conformance thereby improving process stability and first-time through capability. 分层过程审核的目的是确保持续的符合性，从而提高过程稳定性和一次通过率。