Assertion: steam engine's steam | /r/CapableOf | reach low pressure
Facets:
value: during the exhaust stroke
type: TEMPORAL
Source sentences:
text: When the expanding steam reaches low pressure (especially during the exhaust stroke), the previously deposited water droplets that had just been formed within the cylinder/ports now boil away (re-evaporation) and this steam does no further work in the cylinder.[citation needed]