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| English | Spanish |
| 4 km | 1 legua de posta (leuga) |
| m4 | m4 |
| m4 | 1 metro a la cuarta potencia |
| 1 meter raised to the 4 th.magnitude | m4 |
| 1 meter raised to the 4 th.magnitude | 1 metro a la cuarta potencia |
| 3 phase 4-wire meter | contador trifásico de cuatro hilos |
| quality program-4 stands for people, process, performance and product | QP-4 (programa de calidad que abarca los 4 elementos: personal, procedimientos, ejecución y producto) |
| quality program 4, stands for people, process, performance and product | QP-4 |