介绍了一种新研制成功的专利产品——径向迷宫式回转轴密封装置。

A new developed patent product, radial labyrinth drive shaft sealing unit was introduced.

youdao

介绍了一种新研制成功的专利产品——径向迷宫式回转轴密封装置。

A new developed patent product, radial labyrinth drive shaft sealing unit was introduced.

youdao