qualitative examination for lactic acid

例句：

1. 1. Thenew product is qualitatively different from theold one.
   新产品与旧产品在本质上有所不同。
2. 2. The research was conducted to ensure thatall data were of high quality.
   研究的目的是确保所有数据都是高质量的。
3. 3. Thecompany's products areknown for their quality and durability.
   该公司的产品以其质量和耐用性而闻名。