大洋型地壳 dà yáng xíng dì qiào

DEFINITIONS

  1. oceanic crust (geology)

CHARACTERS

大 dà big, great, vast, large, high
洋 yáng ocean, sea; foreign; western
型 xíng pattern, model, type; law; mold
地 dì earth; soil, ground; region
壳 qiào casing, shell, husk