化 作

to change into
to turn into
to become

出现在

催化作用cuī huà zuò yòngcatalysis 光化作用guāng huà zuò yòngphotochemical effect 同化作用tóng huà zuò yòngassimilation 烃化作用tīng huà zuò yòngalkylation 异化作用yì huà zuò yòngcatabolism (biology)趋化作用qū huà zuò yòngchemotaxis (movement of leukocytes under chemical stimulus)风化作用fēng huà zuò yòngweathering (of rocks)