Volume and number of the particles in the juice from scum change gradually since long time solid-liquid contact.

由于固液接触时间长，浮渣滤汁中胶体粒子体积和数量的变化比较平缓；

youdao

Volume and number of the particles in the juice from scum change gradually since long time solid-liquid contact.

由于固液接触时间长，浮渣滤汁中胶体粒子体积和数量的变化比较平缓；

youdao