reciprocal theorem

A reciprocal theorem of dynamics for potential flow problems is first derived by means of the Laplace transform in which the compressibility of water is taken into account.

基于势流理论，考虑流场的可压缩性，首先利用积分变换导得了势流问题的一个动力学倒易定理。

Theorem about reciprocal transformation be-tween decimal numerals and mixed scale numerals is discussed in detail and the rigorous proof about this theory is given. The aim is that simple formulas in theorem is substituted for the former complicated transformation algorithms.

因此，给出了十进制数与混合进制数之间的相互转化定理及其严密的理论证明，旨在应用定理中简单的公式来代替以往复杂的转化算法。

This paper applies the reciprocal theorem to further research on the bending prob-lems of rectangular plates with four corner points supported under linear distribution bending moment acting.

在本文中，我们应用功的互等定理进一步研究了在一集中弯矩作用下四个角点被支承的矩形板的弯曲问题。

The reciprocal theorem is applied to the bending of the isosceles right-angled triangle plate.

应用功的互等定理法研究了等腰直角三角形板的弯曲问题.