A powdery ink used dry or suspended in a liquid to produce a photocopy.
A powdery ink used dry or suspended in a liquid to produce a photocopy.
色粉一种粉状颜料，在液体中变干或凝结，从而产生照片底片
A powdery ink used dry or suspended in a liquid to produce a photocopy.
色粉一种粉状颜料，在液体中变干或凝结，从而产生照片底片