undissolved phass不溶相
undissolved wastes非溶性污染物
undissolved scale较难溶水垢
undissolved residue不溶残渣
Undissolved Metal未熔化之金属
undissolved particles未溶相
undissolved microbody不溶性微粒
undissolved substance不溶物
undissolved phase不溶相
"undissolved sugar in the bottom of the cup"