銅どうアンモニア法ほうMeanings1nouncuprammonium process; cuprous ammoniacal processA chemical process used in rayon production, involving copper and ammonia. Technical term used in textile chemistry.銅どうアンモニア法ほうはレーヨン製せい造ぞうに用もちいられる。The cuprammonium process is used in rayon production.