second powerˈsekəndˈpauə 基本英英近义反义例句 二次幂; 平方 Noun: the product of two equal terms;
nine is the second power of three
gravity is inversely proportional to the square of the distance
近义词square正方形 We can raise any number to the fourth power by squaring it twice.我们能把任一数平方两次就得到它的四次方。 A theory that the power of a computer is equivalent roughly to its cost squared.计算机性能和价格关系的法则，即性能与价格的平方大体上相等。