rappetihendatud pulbri pakketihedus, mida iseloomustab pulbriosakeste juhuslik kuid maksimaalselt tihe asetus (vt juhupake, rappetihedus; vrd vaba juhupake), the packing density for a powder at its tap density, where the particles are in a random but tight structure (see: random packing, tap density; compare: loose random packing)