反应物 /fǎnyìngwù/ angolul

reactant [reactants]▼(participant at the start of a chemical reaction)
noun
[UK: ri.ˈæk.tənt] [US: ri.ˈæk.tənt]

substrate [substrates]▼(the material or substance on which an enzyme acts)
noun
[UK: ˈsʌb.streɪt] [US: ˈsʌb.ˌstret]