helium
| inwasmethode
| helium | |
| tech. | helium |
| inwasmethode | |
| med. | gas dilution method; washout method; washout technique |
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| helium | |||
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helium : 20 phrases in 8 subjects |
| Earth sciences | 2 |
| Electronics | 2 |
| Environment | 1 |
| General | 2 |
| Information technology | 2 |
| Medical | 2 |
| Physical sciences | 7 |
| Technology | 2 |