 |
| |||
| réseau annulaire; réseau en anneau | |||
| |||
| réseau bouclé | |||
| canalisation bouclée; conduite de ceinture | |||
|
ring mains : 7 phrases in 6 subjects |
| Astronomy | 2 |
| Earth sciences | 1 |
| Electronics | 1 |
| Health care | 1 |
| Industry | 1 |
| Mechanic engineering | 1 |
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