PQC是指那些对于在公差内部的结果，无论在什么位置，靠近目标值与否，顾客满意度无明显变化，但是一旦该测量结果超出规格，那么顾客满意度会像抛物线一样急剧下滑。原文是：Product Quality Characteristic (PQC) – Characteristic which is critical to the function / performance of the product, but for ...