| Subject | English | Spanish |
| patents. | instruction for a technical activity | instrucción para una actividad técnica |
| coal. | Supplementary Technical Instructions | instrucciones técnicas complementarias |
| environ. | technical instruction | instrucciones técnicas |
| environ. | technical instruction The education, instruction, or discipline pertaining to or connected with the mechanical or industrial arts and the applied sciences | instrucciones técnicas |
| environ. | technical instruction air | norma técnica "aire" |
| transp., avia. | technical instructions | instrucciones técnicas |
| law, tech., R&D. | technical instructions | información técnica |
| patents. | universality of a technical instruction | validez universal de una instrucción técnica |