subsurface

noun · adjectiveB2

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Danh từ

noun

Plural noun:

subsurfaces

1.
Something that is below the layer that is on the surface.
Before we could lay the flooring we had to lay a subsurface under it to keep it flat and support it.
2.
(countable)(countable, mathematics) A surface which is a submanifold of another surface.

Tính từ

adjective

1.
(not comparable)Below the surface.
variations in subsurface conditions