Radial velocity
volume
British pronunciation/ɹˈeɪdɪəl vəlˈɒsɪti/
American pronunciation/ɹˈeɪdɪəl vəlˈɑːsɪɾi/

تعريف ومعنى "radial velocity"

Radial velocity
01

velocity along the line of sight toward or away from the observer

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