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30 apr 1956 anni - 1956年4月30日国内第一台管型塔式起重机在上海建筑机械制造厂试制成功。

Descrizione:

1956年4月30日国内第一台管型塔式起重机在上海建筑机械制造厂试制成功。

Aggiunto al nastro di tempo:

工业大事年表

2 set 2023

1

0

686

Data:

30 apr 1956 anni

Adesso

~ 69 years ago

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