quality change rule

• 质量变化规律

quality change rule的用法和样例：

例句

1. The quality change rule and influence factors are investigated during storage of Luzhou-flavor liquor, and the measures of quality stabilization are found.
   摘要研究了浓香型白酒贮存过程中的质量变化规律以及影响因素，找出保持质量相对稳定的措施。