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.
由此可见，太阳光是太阳由于受到多个变力作用而形成的以电磁波(物质波)为媒介，始终传递着巨大能量的机械波。
Sunlight, therefore, is a mechanical wave created by many variable forces propagating huge energy through an electromagnetic wave medium.
详细分析环锭纺细纱机因机械缺陷造成的罗拉类、齿轮类和胶辊类机械波的成因，并针对性地提出相应的减缓或消除措施。
Detailed analysis is done to the mech-wave caused by the mech-defection in rollers, gears and cots. Measures are given accordingly so as to reduce or remove it.
详细分析环锭纺细纱机因机械缺陷造成的罗拉类、齿轮类和胶辊类机械波的成因，并针对性地提出相应的减缓或消除措施。
Detailed analysis is done to the mech-wave caused by the mech-defection in rollers, gears and cots. Measures are given accordingly so as to reduce or remove it.
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