Assertion: heavy water | /r/HasProperty | kept under pressure
Facets:
Source sentences:
text: The heavy water is kept under pressure which increases its boiling point so that it can operate at high temperatures without boiling.
text: Heavy water that is heated in the reactor core is kept under pressure to prevent it from boiling.
text: The heavy water is kept under pressure which increases its boiling point so that it can operate at high temperatures without boiling.