Does the hospital preparation use a pulverizer or a mill?

Both.

1. pulverizer: hospital preparation pulverizer is used to pulverize hard substances into fine powder. It contains a rotating blade or hammer, which can crush substances at high speed.

2. Mill: The hospital preparation mill is mainly used to grind ordinary substances into powder. Using the principle of friction and pressure, the mill grinds the raw materials into the required fine powder on the grindstone or millstone.