The Earth's crust is thought to be divided into huge, movable segments, called plates, which float on a soft plastic layer of rock.

人们认为地壳分成了巨大的、可移动的部分，称为板块，这些板块漂浮在柔软可塑的岩石层上。

youdao

The appearance of the stated plastic layer 4 is consistent with the existing nut.

上述塑料层4的外形与现有的螺帽一致。

youdao

The structure of pipe is thin inner plastic layer and thick outer plastic layer, easy to join with hot-melt pipe fitting.

生产的管材结构为内塑层薄外塑层厚，以利于与热熔管件连接；

youdao

It combines a strand of standard plastic with a layer made from a "smart" material that can absorb water.

BBC: TED 2013: 4D printed objects 'make themselves'

Landfills without the benefit of a naturally impermeable layer use plastic liners and imported clay.

ECONOMIST: The charms of modern landfills

Now each layer of plastic is as thin as a sheet of copy paper, resulting in smooth printed prototypes.

ENGADGET: MakerBot unveils Replicator 2, 2X and launches retail store, we go eyes-on