The selection principles of aminoacid used in gun color plating bath based on pyrophosphate are studied and aminoacids suitable for the five prevailing gun color coatings are recommended respectively.

• 然后着重研究了以焦磷酸盐为基的枪色镀液中氨基酸的选择方法,并具体介绍了目前流行的五种抢色镀层所推荐选用的氨基酸。