优化燃油率并确保耐久性是最关键的设计准则，实现这两点需要丰富的车轴运转原理和部件功能知识。

Optimizing fuel economy and ensuring durability are key design criteria that depend on thoughtful knowledge of how an axle works and the implications of the components.

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以at89c52为控制内核，对锁具转动的循环次数计数，实时监测锁头运转位置和触点的电气导通性以保证循环耐久性试验可靠进行，并显示循环次数。

With AT89C52, the system can count the run times of the test and display it, monitor the lock head and connector in real time to make sure of its security.

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