| Subject | English | Spanish |
| comp., MS | Base 64 encoding | codificación Base 64 (A binary-to-text encoding scheme whereby an arbitrary sequence of bytes is converted to a sequence of printable ASCII characters) |
| comp., MS | 64-bit | 64 bits (Of, pertaining to, or descriptive of the amount of data -64 bits, or 8 bytes- that certain computer systems or programs can process at one time) |
| commun., IT | cct-mode nx64 kbit/s bearer service unrestricted | servicio portador en modo circuito a n x 64 kbit/s, sin restricción |
| commun. | circuit mode 64 kbit/s unrestricted bearer service | servicio portador no restringido en modo circuito a 64 kbit/s |
| commun., IT | circuit mode,64 Kbits/s,8 KHz structured bearer service for transmission of speech signals | servicio soporte en modo circuito a 64 kbit/s, estructurado a 8 kHz, para transmisión de señales de voz |
| commun., IT | circuit mode,64 Kbits/s 8 KHz-structured bearer service,for transmission of audiofrequency information | servicio soporte en modo circuito a 64 kbit/s, estructurado a 8 kHz, para transmisión de audiofrecuencias |
| commun. | circuit switched transparent at 64 Kbit/s | circuito conmutado transparente de 64 Kbit/s |
| commun. | circuit-mode 64 kbits unrestricted | 64 kbit/s sin restricciones en modo circuito |
| transp. | equator-ward of 64 degrees | latitud de 64° en la dirección del ecuador |
| stat. | female population aged 15-64 | población femenina entre 15 y 64 años |
| health. | 64-K protein | proteína 64-K |
| commun. | 64 kbit/s digital unstructured leased line | línea arrendada digital de 64 kbits/s sin estructurar |
| commun., IT | 64 Kbit/s switched public network | red pública conmutada a 64 kbit/s |
| stat. | male population aged 15-64 | población masculina entre 15 y 64 años |
| pwr.lines. | standardized 64 kbit/s digital signal | señal digital normalizada de 64 kbit/s |
| stat. | total population aged 15-64 | población total entre 15 y 64 años |
| commun. | videotex alphageometric at 64 Kbit/s | videotex alfageométrico a 64 Kbit/s |
| gen. | Working Party on Article 64 of the Staff Regulations | Grupo del artículo 64 del Estatuto |
| comp., MS | x64-based | basado en x64 (Pertaining to the combination of a 64-bit Windows operating system and microprocessors that natively support the x86 for extended systems (x64) 64-bit instruction set. Examples include AMD Opteron and Intel Xeon with 64-bit extension technology processors) |
