A waveof foreclosures is damping consumer spending and spreading anger.
一股丧失抵押品赎回权的浪潮正在使消费者减少消费并扩散愤怒情绪。
2
In this paper, the initial-boundary value problem of a kind of nonlinear fourth-order wave equations with damping and source terms is studied on the base of Beam equation.
本文在梁方程的基础上研究了一类具有非线性阻尼项和力源项的四阶波动方程的初边值问题。
3
This paper discusses the boundary value problem of the nonlinear wave equation with damping.