keystone
| combination
| keystone abbr. | |
| construct. | clave |
| combination abbr. | |
| busin. labor.org. account. | agregación |
| el.tract. | acoplamiento |
| fin. | strangle |
| math. | combinación |
| phys. | composición de fuerzas |
| stat. scient. | enlace |
| tech. | mezcla; reunión |
| transp. | soldadura de estanquidad |
| transp. mech.eng. | interconexión |
| |||
| clave | |||
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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 |