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。

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In this paper, the ICRF fast wave mode-conversion and correlative damping mechanism in an inhomogeneous hot plasma are investigated for the configuration of tokamak by using the kinetic theory.

本文对托卡马克位形，用动力理论研究了非均匀热等离子体的ICRF快波模转换及有关的阻尼机制。

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For simulating the movements of various ship types, it is required that the inertia moment, damping moment and wave interference moment of simulation stand can be adjusted.

为使摇摆模拟台能够模拟各种类型船舶的运动，要求模拟台的转动惯量、阻尼力矩和波浪干扰力矩都是可调节的。

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