NC machine tools work so fast that their production rate is equal to the rate of five manually operated machine tools.

数控机床工作迅速，其生产率是手动机床的五倍。

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NC machine tools work so fast that their production rate is equal to the rate of five manually operated machine tools.

数控机床工作迅速，其生产率是手动机床的五倍。

youdao