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1 magg 1973 anni - 1973年5月1日上海第一石油机械厂试制成功新的密封轴承三牙轮钻头。

Descrizione:

1973年5月1日上海第一石油机械厂试制成功新的密封轴承三牙轮钻头。

Aggiunto al nastro di tempo:

工业大事年表

2 set 2023

1

0

686

Data:

1 magg 1973 anni

Adesso

~ 52 years ago

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