n.a system of two stars that revolve around each other under their mutual gravitation
同义词:binary stardouble star
adj.
of or pertaining to a number system have 2 as its base
"a binary digit"
consisting of two (units or components or elements or terms) or based on two
"a binary star is a system in which two stars revolve around each other"; "a binary compound"; "the binary number system has two as its base"