常用短語

slow the ageing process減緩衰老過程

rapid ageing process快速老化過程

step ageing process分級(jí)時(shí)效工藝

Slow down ageing process延緩衰老的步伐

interrupted multi-step ageing process多級(jí)斷續(xù)時(shí)效工藝

The process of ageing衰老過程

ageing hardening process時(shí)效硬化進(jìn)程