sea-floor spread.ing

sea-floor-spreading的音标和读音：
DJ音标发音： [ˈsi:ˌflɔ:rˈ sprediŋ, -ˌflour]
KK音标发音： [ˈsiˌflɔrˈ sprɛdɪŋ, -ˌflor]

sea-floor-spreading的词性：
n.（名词）

1. 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