线外质量控制
线外质量控制-
线内质量控制主要指制造工艺过程的控制、诊断和调整等，线外质量控制主要指三次设计、质量改进、质量设计和试验设计法等。
Quality Engineering is classified as on-line quality control and off-line quality ,, The on-line quality control means the control ,, diagnosis and adjustment in the manufacturing process . The off-line quality control focuses on three-times design , quality improvement , quality design and experiment design .