Partspermillion (ppm)

百万分率（ppm)

英文解释

Partspermillion (ppm), a concentration unit, is the concentration expressed by the solute mass in parts per million of the total solution mass, also known as the concentration in parts per million.

中文解释

百万分率（ppm)，一种浓度单位，是用溶质质量占全部溶液质量的百万分比来表示的浓度，也称百万分比浓度。

参考文献

[1]. Stefano Gianni, et al. Ideation and assessment of a nitric oxide delivery system for spontaneously breathing subjects. Nitric Oxide. 2020 Nov 1;104-105:29-35.