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- Based on the geochemical data of the long regional profile in western Jiangxi and using quadratic arithmetic average and correlation analysis,orebearing features of strata are discussed in this paper. 本文以赣西地区区域长剖面的地球化学测量数据为基础，运用二次算术平均及相关分析方法，探讨了地层含矿性。
- The little boy was not good at arithmetic. 这个小男孩算术不太好。
- She grounded her pupils well in arithmetic. 她给自己的学生打下良好的算术基础。
- He got the answer by mental arithmetic. 他用心算得出了答案。
- He is good at mental arithmetic. 他擅长心算。
- I'm good at history but not so hot at arithmetic. 我的历史成绩不错，但算术不太好。
- quadratic arithmetic 二次运算
- He brushed up on fractions before taking the arithmetic test. 在参加算术考试前他又重温了分数。
- Their difference is a quadratic residue of 17. 它们的差是17的平方剩余。
- The branch of algebra that deals with quadratic equations. 二次方程式论处理二次方程式的代数学的分支
- Some quadratic equations have no real roots. 某些二次方程没有实数根。
- What's the correct answer to this arithmetic question? 这道算术问题的正确答案是什么?
- My brother is poor at arithmetic. 我弟弟的算术很差。
- X2+3X+2=12 is a quadratic equation. X2+3X+2=12是一个二次方程式。
- Her school report shows that she is weak at/in arithmetic and biology. 从她的学习成绩单可看出她算术和生物成绩差。
- Quadratic approximations in two dimensions. 二维中的二次逼近法。
- Use quadratic (10-node) tetrahedra if available. 10节点四面体单元？
- Some hard problems in arithmetic bewilder me. 算术上一些难题使我糊涂。
- Quadratic splines need at least 3 points. 二次曲线样条至少需要3个点。
- We do addition and subtraction in arithmetic. 在算术里，我们作加减运算。
