1.
Teaching Important Points: The essence of subtraction and the relationship between the parts of subtraction.
教学重点：减法的意义和加减法的各部分的关系。
2.
Burden Reducing and Efficiency Increasing of Chinese Teaching--On the Addition and Subtraction of Chinese Teaching;
语文教学的减负与增效——谈语文教学的“加减法”
3.
Energy and Resources Saving and Emission Reduction of Taochong Iron Mine,MIS Co Ltd
马钢桃冲铁矿节约资源能源与减排的“加减法”
4.
He could add and subtract, but hadn't learned to divide.
他会做加减法，但还没有学会除法。
5.
The little girl has begun to learn to add and subtract.
这小女孩已在学做加减法了。
6.
adding and subtracting device, pocket-type, operated with a stylus
加减法运算器，袖珍型，靠记录针控制
7.
In their first year at school, most children learn to add and subtract.
入学第一年，多数孩子学习加减法。
8.
The danger, students who can not even do simple addition and suppression (subtraction).
危险是学生们甚至不会简单加减法。
9.
The realization of the fast adder-subtracter for the 23 bit’s floating point numbers by VHDL
用VHDL实现的23位快速浮点数加减法器
10.
addition by subtraction
采用减法运算的加法
11.
Try adding up this time instead of subtracting.
这次试用加法，不用减法。
12.
Please add up this time instead of subtracting.
这次请用加法，不用减法。
13.
Brief Discussion on Application of Enthalpy Balance Method in Desuperheater Water Calculation
浅谈热焓平衡法在减温器投加减温水量的应用
14.
You must learn to add and subtract in arithmetic.
学算术要学会加法和减法。
15.
Students who cannot even do simple addition and subtraction.
学生甚至不会做简单的加法和减法。
16.
TCL s addition and subtration:thinking from internationalization;
TCL的加法和减法:来自其国际化的思考
17.
This FPT algorithm decreases about 50% of mulitiplication and 15% of plus than usually row-arranging algorithm.
这种算法比常规的行——列法在乘法上减少约50%,在加法上减少约15%。
18.
The little boy can add, subtract and multiply, but cannot divide.
那小男孩会做加法、减法和乘法，但不会做除法。