|  | 
| Share | Phrase | 
|---|
 | 15.38% | time [is] microsecond |  | 12.53% | microsecond   duration |  | 10.81% | last microsecond  [perform operation] |  | 9.96% | microsecond   period |  | 9.95% | microsecond   range |  | 9.62% | duration [is] microsecond |  | 9.47% | microsecond   order |  | 6.29% | microsecond   time |  | 5.52% | microsecond   delay |  | 3.71% | up [degree] microsecond |  | 2.84% | take microsecond  [perform operation] |  | 2.48% | discharge  microsecond |  | 1.39% | least [degree] microsecond |  |  |