Soft-paste porcelain

фриттованный фарфор

Англо-русский политехнический словарь

Soft-paste porcelain

noun a translucent ceramic ware fired at a low temperature that was produced in Europe during the 16th through 18th centuries in imitation of hard-paste porcelain; also an article of soft-paste porcelain

Merriam-Webster's Collegiate Dictionary