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| leakage test for preservation package | |||
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| 漏泄试验: 29 phrases in 13 subjects |
| Automobiles | 1 |
| Aviation | 2 |
| Business | 1 |
| Chemistry | 2 |
| Ecology | 1 |
| Electric machinery | 1 |
| Electronics | 6 |
| Hydroelectric power stations | 3 |
| Metallurgy | 1 |
| Nautical | 1 |
| Oil / petroleum | 4 |
| Space | 2 |
| Technology | 4 |