为了改善以前的状况，人们改造了许多船只，并用带有舷外发动机的纤维强化塑料（FRP）船只取代了许多木筏或乡村小船。
In an effort to improve on the past, boats have been upgraded and many wooden catamarans or country boats have been replaced with fiber-reinforced-plastic (FRP) craft with outboard motors.
不仅标准轿车石油无法正常工作就需要额外的强化添加剂只是要回的最低要求一个赛车发动机油。
Not only does the standard passenger car oil not work it needs to be fortified with additional additives just to get back to the minimum requirement of a racing engine oil.
在发动机的不断强化和对排放日益严格的限制下，有必要对燃烧过程的火焰温度进行测试。
With the constantly increasing of output of engines and the more stringent exhaust emission regulations, it is necessary to measure the combustion flame temperature of the engines.
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