| 摘要 |
Urea particle exhibits a particle gross density of 1.25-1.33g/cm3>, an average minimum feret's diameter of smaller than 4, preferably 2-3 mm with a relative standard deviation of smaller than 5%, and a ratio of the minimum feret's diameter to maximum feret's diameter is larger than 0.923. An independent claim is included for the preparation of the urea particle. |
