The essay discusses about the relational questions in measure of the sound speed which is also called the resonant interfering method theoretually, So that the students can understand the physical pleat of this experiment more clearly.

• 摘要本文对声速测量－共振干涉法中相关问题进行了理论探讨，使学生对此实验的物理图象，有了更清楚的认识。