机械波的形成需要振源和介质。

A vibration source and a medium are needed to form a mechanical wave.

这就证实了一些人认为的对流层机械波并不是一个对色球和日冕的有效加热机制的说法。

This confirms the idea that the mechanical waves generated from the convection zone are not very effective in heating the chromosphere and corona.

本文分别讨论了机械波、电磁波、物质波在两种介质的分界面正入射传播时产生半波损失的本质。

In this paper, we discuss the nature of half-wave loss about mechanical wave, electromagnetic wave and matter wave respectively.