1.
Mathematical Practice: the Mathematics Variation Analysis of Mathematical Classroom Communication;
数学实践:数学课堂交流之数学变化分析
2.
Change mathematics educational thoughts and further reform on mathematics teaching;
转变数学教育思想 深化数学教学改革
3.
Reforming Teaching Methods to Improve Students Understanding of Mathematics;
转化、优化、变化、类化与数学素质培养
4.
Electrochemistry method to measure the varies of thermodynamics function in the chemistry reaction
电化学法测定化学反应热力学函数变化值
5.
Research on E-learning and the Change of the Classroom Teaching Structure
数字化学习与课堂教学结构变革探究
6.
innumerable variations
无数的变化 [变形]
7.
(mathematics) varying in the same manner as another quantity.
（数学）以与其他量相同的方式变化。
8.
(mathematics) varying in a manner opposite to that of another quantity.
（数学）以与其他量相反的方式变化。
9.
Two notes about changes of inductive method;
关于数学归纳法变化类型的两个注记
10.
Probing into the Dynamic of Drawing Support from Graph Change to Embody Mathematic Knowledge;
借助图形变化体现数学知识的动态性
11.
Role Transfer of College Teachers in Digital Campus;
论校园数字化中的大学教师角色转变
12.
A Research and Analysis on the Change of Function Contents between the New Textbooks for Junior High School Students;
高中数学新教材函数内容变化的分析研究
13.
(physics) the maintenance of a certain quantities unchanged during chemical reactions or physical transformations.
（物理学）在化学反应或物理变化中，数量不变的原则。
14.
Practical Design for Digital Teaching and Experiment Device of Speed Control by Frequency Variation;
数字化变频调速教学实验装置的产品化设计
15.
Application of Various Methods to Improve Teaching of Functions of Complex Variable and Integral Transform;
采用多种教学方法优化复变函数与积分变换教学
16.
Effect of Composition on Coefficients of Mathematical Model and Basic Value of Steel Deformation Resistance
钢的化学成分对变形抗力基值和数学模型系数的影响
17.
The electronic computer has brought about thorough changes in carrying out mathematical computations.
电子计算机导致数学计算的根本性变化 。
18.
Today I ask myself," What difference do science and math grades make?
今天，我问自己，“理化和数学成绩能改变什么呢？