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| maaiveld; maaiveldhoogte f | |||
| niveau van de grond | |||
| |||
| hoogteligging t.o.v.het natuurlijke terrein | |||
| ground level: 41 phrases in 9 subjects |
| Agriculture | 5 |
| Construction | 3 |
| Earth sciences | 3 |
| Environment | 10 |
| General | 8 |
| Hydraulics | 3 |
| Life sciences | 4 |
| Mechanic engineering | 2 |
| Transport | 3 |