| 释义 |
sea-floor spreading sea-floor spread.ing AHD: [s¶“flôr” sprµd“¹ng, -fl½r”] D.J. [6si87fl%8 6spred!0, -7fl*&r]K.K. [6si7fl%r 6sprWd!0, -7flor]n.(名词)In the theory of plate tectonics, the process by which the sea floor is being continuously formed and spread by upwellings from the earth's mantle along the mid-ocean ridges when crustal plates move apart.海底扩张学说:在地壳构造学理论中,指地壳分开,内部物质沿海洋中部的裂隙从地幔中上涌,从而形成和扩大海底的过程 |