_:b1218494 _:b1218497 . _:b1218496 _:b1218495 . _:b1218497 _:b1218496 . _:b1218498 . _:b1218495 . . _:b1218498 . _:b1218495 . . _:b1218498 . _:b1218495 . _:b1218494 . "high pressure environment" . _:b1218496 . _:b1218498 . _:b1218497 . "A high pressure environment is an environment in which all material entities are exposed to a high ratio of force per unit area." . _:b1218494 .