例句與造句

1. Methanex is the world's largest producer of methanol, a prime component in the production of MTBE, a gasoline octane enhancer.
2. But Merrill Lynch's Hardiman noted that MMT is substantially cheaper than other octane enhancers used to avoid that unpleasant pinging sound called engine knock.
3. In addition to being used as octane enhancers, ethanol and MTBE are used to increase oxygen in fuel, to make it burn more cleanly.
4. Refiners are attracted to MMT because it is often roughly half as expensive to use as existing octane enhancers, which make gasoline burn more smoothly.
5. MMT was first used as an octane enhancer in leaded gasoline, but was banned in 1977 under a federal rule intended to insure that additives not adversely affect catalytic converters.
6. It's difficult to find octane enhancer in a sentence. 用octane enhancer造句挺難的
7. Billed as an " octane enhancer " that increases the power of fuel, MMT has been added to automobile fuel sold in the United States and Canada since the mid-1970s, when use of lead additives was restricted in both countries.
8. Environmental groups compare the potential risks to the dangers now associated with tetraethyl lead, a compound containing lead that was the predominant octane enhancer until it was phased out, beginning in 1979, because of its adverse affect on catalytic converters and for health reasons.