Keystone
| Center
| keystone | |
| construct. | clave |
| center | |
| construct. | andamiaje; cimbra |
| math. | centro |
| mech.eng. | centrar; orificio de centrado; taladro de centrado |
| tech. | central; portapuntas de un torno |
| transp. mech.eng. | agujero de centro |
| work.fl. | centro de información sectorial |
| |||
| clave | |||
|
Keystone : 19 phrases in 10 subjects |
| Antennas and waveguides | 1 |
| Baseball | 1 |
| Communications | 5 |
| Construction | 1 |
| Environment | 1 |
| Forestry | 2 |
| Politics | 1 |
| Superconductivity | 1 |
| Technology | 4 |
| Television | 2 |