(centres of gravity)
The ~ of an object is a point in it. If this point is above the base of the object, it stays stable, rather than falling over.
N-COUNT
(centres of gravity)
The ~ of an object is a point in it. If this point is above the base of the object, it stays stable, rather than falling over.
N-COUNT
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012