calculi是calculus的复数
calculus
美 ['kælkjələs] 
英 ['kælkjʊləs] 
- n.【医】结石;积石;牙垢;【数】运算
 - 网络微积分学;肾结石;结石状
 
复数:calculi  
n.  | 1. 计算法 2. 【医学】结石,石;积石;牙垢 3. 【数学】运算,演算;微积分(学)  | 
n.  | 1. a branch of mathematics dealing with the way that relations between some sets are affected by very small changes in one of their variables as they approach zero. 2. a method or system of calculation using symbols or symbolic logic 3. a stone or concretion, especially one in the kidney, gallbladder, or urinary bladder 4. a nonmathematical evaluation, estimation, or computation, e.g. in short- or long-term decision making or strategy formulation 5. a type of mathematics used for calculating such things as the slopes of curves 1. a branch of mathematics dealing with the way that relations between some sets are affected by very small changes in one of their variables as they approach zero. 2. a method or system of calculation using symbols or symbolic logic 3. a stone or concretion, especially one in the kidney, gallbladder, or urinary bladder 4. a nonmathematical evaluation, estimation, or computation, e.g. in short- or long-term decision making or strategy formulation 5. a type of mathematics used for calculating such things as the slopes of curves  |