Researchers constructed a popularity-name index (PNI) for each name.

研究人员为每一个名字都计算出其受欢迎指数(popularity - name index (PNI))。

But the exact molecular mechanism of PNI was not fully understood.

但胰腺癌神经浸润转移的确切分子机制至今尚不明朗。

The researchers constructed a popularity-name index (PNI) for each name.

研究员为每个名字建立了一个流行名指数(简称pni)。

For example, the PNI for Michael is 100, the most frequently given name during the period.

比如，麦克(michael)的受欢迎指数为100，是研究范围内使用最频繁的名字。

Objective To assess the prognostic significance of the perineurium invasion (PNI) in gastric cancer patients.

目的探讨神经束膜浸润对胃癌预后的意义。