Assertion: heavy fuel oil | /r/ObjectUse | used as marine fuel
Facets:
value: mainly
type: DEGREE
Source sentences:
text: Heavy fuel oils are mainly used as marine fuel, and HFO is the most widely used marine fuel at this time; virtually all medium and low-speed marine diesel engines are designed for heavy fuel oil.
text: Heavy fuel oils are mainly used as marine fuel, and HFO is the most widely used marine fuel at this time; virtually all medium and low-speed marine diesel engines are designed for heavy fuel oil.