quaternary clay

what does quaternary clay Chinese Definitions
Example for 'quaternary clay'
Example sentence
  1. use of a horizontally directional drill in long-distance non-excavation pipeline-laying in quaternary clay layers
  2. he fashioned the clay into a jar.
  3. the math exam was a clay pigeon.
  4. all the can shoot is a clay pigeon.
  5. he fashioned the clay into a pot.
  6. the artist started with a big lump of clay.