"陶器制造术" can be translated into English as "pottery-making techniques" or "ceramic manufacturing techniques".
"Pottery-making techniques" specifically refers to the methods and skills involved in creating pottery.
"Ceramic manufacturing techniques" has a broader scope, encompassing not only pottery but also other ceramic products, and can be used when referring to more industrialized or formalized ceramic production processes.
Choose the appropriate phrase based on the specific context and emphasis.