| qs | as much as will suffice [Lat. quantum sufficit]; sufficient quantity [Lat. quantum satis] |
|---|---|
| q.l. | quantum libet; as much as desired; 필요한 만큼 |
| q.s. | quantum satis; sufficient quantity; 충분한 양 |
| DOFCOSY | double-quantum filtered correlated spectroscopy |
| DOUBTFUL | double quantum transition for finding unresolved lines |