focus seat hearth centre focus of an earthquake earthquake centre
The point on the earth´s surface directly above is called the epicenter.
地表上直接对着震源的那一点称为震中。
—— 辞典例句This requirement manifests itself in terms of multiple sources.
这一要求本身表明要用多震源。
—— 辞典例句The focal depth was about 6 mi.
震源深度约6哩。
—— 辞典例句The wave motion bears the Key signature imparted by the nature and extent of the source.
波动具有由震源的性质和范围造成的主要特征。
—— 辞典例句The common - depth - point technique merely means the manifold repetition of each reflection observation with different source - detector geometry.
其深度点技术仅意味着用不同的震源 ― ―检波器的分布形式多次重复每个反射观测。
—— 辞典例句