A set of LPIV interrogation system based on greyness discriminance is developed.

开发了一套PIV查询系统，用证明该系统是成功的。

The statistical theories of hypothesis tests and the quality control limit of multivariate have been used to study the discriminance for drink quality stability.

同,运用假设检验、多元质量控统计理论研究了质量稳定性的判别方法。