"棉纺工艺" can be translated into English as "cotton spinning technology" or "cotton spinning process".
"Cotton spinning" specifically refers to the process of converting cotton fibers into yarn.
"Technology" emphasizes the scientific and technical aspects involved in the spinning process.
"Process" focuses more on the sequence of steps or operations in the spinning procedure.
Both translations are acceptable, depending on the context and the emphasis you wish to place on the term.