常見例句雙語(yǔ)例句According to the concept of envelop evaluates equation Come to the conclusion that the projection of torus is close elliptic equidistant curve but is not ellipse.從而得出結(jié)論:圓環(huán)面的輪廓線是封閉的橢圓等距曲線,而不是橢圓。 返回 equidistant projection