reciprocal theorem

• 倒易定理

reciprocal theorem的用法和样例：

例句

1. This section is devoted to the proof of a reciprocal theorem between a pair of elastodynamic states.
   这一节将专门来证明一对弹力动力状态之间的倒易定理。
2. There are a number of alternative formulations of the reciprocity theorem.
   还有许多别的互易定理的公式。