1 sentence

1. 在这篇物理论文中，作者用柔代表流体的密度。

   zài zhè piān wù​lǐ lùn​wén zhōng, zuò​zhě yòng róu dài​biǎo liú​tǐ de mì​dù.

   In this physics paper, the author uses rho (ρ) to represent the density of the fluid.

   Source: Dong Chinese Dictionary