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8 dic 1953 anni - 1953年12 月8日1万伏高压扇形电力电缆在上海电缆厂试制成功。

Descrizione:

1953年12 月8日1万伏高压扇形电力电缆在上海电缆厂试制成功。

Aggiunto al nastro di tempo:

工业大事年表

2 set 2023

1

0

688

Data:

8 dic 1953 anni

Adesso

~ 71 years ago

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