The concepts of marine transgression and regression are considered to be fundamental.

海进和海退概念被认为是基本的概念.

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This method of portrayal emphasizes both the regressive nature and the time equivalence.

这种图示方法既强调了海退性质也强调了同时性.

辞典例句

This was the result from the large - scale regression in the Late Ordovician.

这是晚奥陶世晚期大规模海退的结果.

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As the sea - soaked sea back more times, resulting in deposition of continental and marine sedimentary phases.

由于海浸海退次数多, 造成陆相沉积和海相沉积相间.

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From the Early Silurian large scale of retrogression had begun accompanying the Late Caledonian movement.

晚加里东运动(始于早志留世)发生了大规模的海退.

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