This paper points out that on certain condition the reciprocal theorem is equivalent to the superposition principle of displacements.
本文指出，在一定的条件下，功的互等定理等价于位移叠加原理。
2
The reciprocal theorem is used to make research on the bending of a set square with free hypotenuse under a concentrated load acting at any of its points, and its accurate solution is given.
应用功的互等定理研究了在一集中载荷作用下斜边自由的三角形板的弯曲问题，给出了该问题的精确解。
3
The complete reciprocal movement of four points is a special teaching form of distribution approach in class.