The utility model is an ideal shaft sealing device.

是一种较理想的轴密封装置。

youdao

Note: it could be equipped cursor device to track with sealing and frequency control.

注：可配光标跟踪对版、变频调速。

youdao

Note: it could be equipped cursor device to track with sealing and frequency control.

注：可配光标跟踪对版、变频调速。

youdao