The demulsibility of hydraulic oil is an important quality index.

抗乳化性能是衡量液压油质量优劣的一项重要指标。

This process begins by creating a comprehensive and high-quality index.

这个过程由创造一个全面、高质量的索引开始。

Thalli concentration is a key quality index in microbial growth process.

菌体浓度是微生物生长过程中关键的质量指标。

The Air Quality Index runs from zero to 500, with 500 being the most unhealthy.

空气质量指数的范围从0到500，上限500表示空气质量最不健康。

One of the main quality index of polyether is the potassium and sodium contents.

聚醚中钾、钠含量是其重要质量指标之一。