| 释义 |
天然气tiānránqì可燃气体,主要成分是甲烷,产生在油田、煤田和沼泽地带,是埋藏在地下的古代生物经高温、高压等作用形成的。主要用做燃料和化工原料。{natural gas; inflammable gas consisting mainly of methane, found in the oilfields, coalfields and marshlands, formed by the remains of ancient animals and plants under high temperature and pressure; used mainly as fuel and in making chemicals} |