短語詞組用作名詞 (n.)動(dòng)詞+～claim descent 聲稱是…的後代make descent 使…下降形容詞+～actual descent 真正的後代foreign descent 外國血統(tǒng)good descent 出身貴族vertical descent 垂直下降短語Steepest descent 最速下降法;最陡下降;[數(shù)][數(shù)]最速下降Chinese descent 中國血統(tǒng)lineal descent 直系血親stock descent 爐料的下降Dark Descent 深海末日;失憶癥黑暗後裔;暗黑血統(tǒng)descent phase 下降堦段;下降段matrilineal descent 母系繼嗣prolonged descent 胎頭下降延緩protracted descent 胎頭下降停滯gradient descent 梯度下降descent method n . 下降法chinese descent 中國血統(tǒng)；炎黃子孫steepest descent method 最速下降法；最陡下降法 返回 descent