求翻译：柴油机的质量取决于设计、材料和制造工艺以及装配和安装质量，而柴油机的定期检查和维修对其正常运转更为重要，并直接影响柴油机的可靠性和经济性。是什么意思？

The quality of diesel engines depends on the design, materials and manufacturing processes and quality of assembly and installation, regular inspection and maintenance of the diesel engine to its normal operation is more important and directly affects the reliability and economy of diesel engines.

The quality depends on the design, materials and manufacturing processes, as well as assembly and installation quality, and diesel engine and regular checks and maintenance of its proper functioning is more important and directly affect diesel engine reliability and economy.

The diesel engine quality is decided by the design, the material and the manufacture craft as well as the assembly and the installment quality, but the diesel engine periodic inspection and the service is more important to its normal work, and affects the diesel engine directly the reliability and t

Diesel engine depends on the quality of design, quality of materials and manufacturing processes as well as the Assembly and installation and regular inspection and maintenance of diesel engine on its functioning is more important and directly affect the reliability and economy of the diesel engine.

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