BBC3 年
Mixed numbers, proper and improper fractions
A fraction can be a proper fraction or an improper fraction. An improper fraction written as an integer with a fraction is called a mixed number.
来自MSN2 个月
Primordial black holes can only explain a fraction of dark matter, research suggests
The authors explain that PBHs could explain the totality ... fPBH represents the fraction of dark matter that PBHs can comprise, 10-3 means 0.001, and the solar mass range is self-explanatory.