| Subject | English | Spanish |
| environ., chem. | adding lead alkyl compounds to petrol as anti-knock devices | añadir a la gasolina productos antidetonantes en forma de combinaciones de plomo alcohilo |
| oil | anti-knock | antidetonante |
| nat.sc., environ., chem. | anti-knock additive | agente antidetonante |
| gen. | anti-knock additive | producto antidetonante |
| nat.sc., environ., chem. | anti-knock additive | preparación antidetonante |
| nat.sc., environ., chem. | anti-knock additive | aditivo antidetonante |
| gen. | anti-knock agent | producto antidetonante |
| nat.sc., environ., chem. | anti-knock agent | preparación antidetonante |
| nat.sc., environ., chem. | anti-knock agent | agente antidetonante |
| nat.sc., environ., chem. | anti-knock agent | aditivo antidetonante |
| nat.sc., environ., chem. | anti-knock compound | agente antidetonante |
| gen. | anti-knock compound | producto antidetonante |
| nat.sc., environ., chem. | anti-knock compound | preparación antidetonante |
| nat.sc., environ., chem. | anti-knock compound | aditivo antidetonante |
| oil | anti-knock dope | aditivo antidetonante |
| nat.sc., chem. | anti-knock preparation | preparación antidetonante |
| gen. | anti-knock preparation | producto antidetonante |
| nat.sc., environ., chem. | anti-knock preparation | agente antidetonante |
| nat.sc., environ., chem. | anti-knock preparation | aditivo antidetonante |
| gen. | anti-knock product | producto antidetonante |
| nat.sc., environ., chem. | anti-knock product | preparación antidetonante |
| nat.sc., environ., chem. | anti-knock product | agente antidetonante |
| nat.sc., environ., chem. | anti-knock product | aditivo antidetonante |
| oil | anti-knock properties | propiedades antidetonantes |
| chem. | 10-20 % of the world's lead production goes into anti-knock agents | del 10 al 20% de la producción mundial de plomo se destina a los agentes antidetonantes |
