用时间继电器精确控制润滑脂加注量，不会出现润滑脂溢出现象。
A time relay is used to accurately control the capacity of the injected lubricating grease, and therefore, the overflow phenomenon of the lubricating grease can not happen.
但是用定点器件实现时，在有限的精度运算中，可能出现不稳定现象和发生溢出。
But it will be occur of instability and overflow as result of operation of the finite precision.
但是用定点器件实现时，在有限的精度运算中，可能出现不稳定现象和发生溢出。
But it will be occur of instability and overflow as result of operation of the finite precision.
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