| Moreover, not only Fs but also Ds are frowned on, and grades are regularly inflated to achieve C averages. |
| I did not like the two fs and asked my mother to let me drop one. |
| In the afternoon Hella came to our house and Inspee had been invited by the fs. |
| One of his sitters happened to be a gen-d'arme, whom he had promised to paint for 30 fs. |
| The 10-output synthesizer provides a high-frequency clock with 86 fs RMS phase jitter over the standard 12 kHz to 20 MHz integration range. |
| The system works, says Eleftherios Goulielmakis of the Max Planck Institute, because the electrons come in pulses of 250 as, while the electric field oscillates at 2.5 fs. |
