大西洋洋底在中部形成由北向南的海脊.The floor of the Atlantic ridges in the middle from north to south.一道中海脊是板块之间的边界,在那里新的岩石圈的物质从下部注入.A mid - ocean ridge a boundary between plates where new lithospheric material is injected from below s....
This covers almost the whole of extranuclear physics and most of nuclear physics, too.这就包括了几乎全部核外物理学, 也包括了大部分原子核物理学的范围.The aggregate of cytoplasmic or extranuclear genetic material in an organism.胞质团有机体中细胞质或''....