gradsn.毕业生；[计] 梯度名词grad的复数形式.gradabbr.毕业生；校友（=graduate)grads algorithm梯度算法grading factors分等因素Gradute student硕士研究生grading macadam级配碎石grading station分级站grading of oils石油分类grading of grog熟料过筛grads direction方梯度向grading of soil土壤级配grading criteria评分标准