| |||
principal axis | |||
optical axis | |||
centerline | |||
major axis; principal line | |||
main shaft |
axe principal : 24 phrases in 9 subjects |
Communications | 5 |
Construction | 1 |
Earth sciences | 3 |
Electronics | 3 |
General | 4 |
Marketing | 1 |
Politics | 1 |
Technology | 4 |
Transport | 2 |