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单词 pericenter
释义 peri·center
\ˈperə+ˌ-, ˌ ̷ ̷ ̷ ̷ˈ ̷ ̷ ̷ ̷\ noun
Etymology: peri- + center
: the point in the orbit of a revolving body nearest the center of gravity about which the body moves — compare perigee, perihelion
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