例句與造句

1. Some high - performance engines have two separate camshafts , one for each set of inlet and exhaust valves
   一些高性能發(fā)動(dòng)機(jī)有兩個(gè)單獨(dú)的凸輪軸，分別負(fù)責(zé)開關(guān)進(jìn)氣門和排氣門。
2. However , the yield of gasoline was still low relative to the amount of petroleum processed , and the quality , as measured by octane number , was inadequate for high - performance engines
   然而，相對(duì)于所消耗的石油來講，汽油的產(chǎn)量仍較低，而且其質(zhì)量，以辛烷值的大小來衡量，也不適用于高性能的發(fā)動(dòng)機(jī)。
3. It's difficult to find high-performance engine in a sentence. 用high-performance engine造句挺難的