catalytic例句
        The first 
catalytic converters were called conventional oxidation catalysts.
最初的转化器叫做常规氧化催化器.
The air guards the 
catalytic converter from overload and possible resulting damage.
空气防止了催化式排气净化器的过载及可能产生的损坏.
It is known as 
catalytic cracking.
这就是所谓的催化裂化.