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6 sett 1966 anni - 1966年9月6日上海重型机床厂试制成精密龙门导轨磨床，可以加工长4米、宽 1.25米的机床台面。

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1966年9月6日上海重型机床厂试制成精密龙门导轨磨床，可以加工长4米、宽 1.25米的机床台面。

Aggiunto al nastro di tempo:

工业大事年表

2 set 2023

1

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688

Data:

6 sett 1966 anni

Adesso

~ 59 years ago

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