An user French
says…

Le
Determiner
  ou
Coordinating conjunction
  les
Determiner
 foils  installés
Verb
  entre
Adposition
  les
Determiner
  coques
Noun
  portent
Verb
  environ
Adverb
  le
Determiner
  tiers
3rd
Noun
  du
  déplacement
Noun
.

The foil (s) installed between the shells carry about a third of the displacement.
Words and sentences
New
Le

a surname from Vietnamese

New
ou

  1. or
  2. either...or

New
installés

masculine plural of installé

New
entre

New
coques

plural of coque

New
environ

New
du

New
déplacement

  1. trip, journey
  2. movement (act of moving from one place to another) shift
  3. a move (action of moving)
  4. displacement

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