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20 gen 1986 anni - 1986年1月20日上海沪光仪器厂研制成功0s30型50万伏高压电桥，填补国内空白。

Descrizione:

1986年1月20日上海沪光仪器厂研制成功0s30型50万伏高压电桥，填补国内空白。

Aggiunto al nastro di tempo:

工业大事年表

2 set 2023

1

0

689

Data:

20 gen 1986 anni

Adesso

~ 39 years ago

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