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| 规格控制 | |||
| 规范控制 | |||
| 技术要求控制 | |||
| 规范技术要求控制 | |||
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specification control : 38 phrases in 13 subjects |
| Air defense | 1 |
| Automobiles | 1 |
| Aviation | 19 |
| Business | 1 |
| Commerce | 1 |
| Electronics | 3 |
| Hydroelectric power stations | 1 |
| Information technology | 1 |
| Oil / petroleum | 1 |
| Refrigeration | 1 |
| Space | 1 |
| Technology | 6 |
| United States | 1 |