目前，国际上性能十分优异的工程塑料——尼龙12被广泛应用在燃油管路系统及汽车气动管路系统。
Now the engineering plastic Nylon 12 with its superior performances is widely used in the fuel supply line system and automotive pneumatic tube system in the world.
柴油发动机的故障一般分为电喷系统、机械、燃油管路方面的故障。分析了柴油发动机功率不足的原因，并提出检修方法。
Failures in diesel engines may be in their EFI system, mechanical system and fuel lines. The paper analyzes the causes of the under-capacity and carries out maintenance.
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