双变频简约机械结构，易维护、磨损少、寿命长。

Double transducer simplifies mechanic gearing. Easy to maintain, little wear and long life.

youdao

双变频简约机械结构，易维护、磨损少、寿命长。

Double transducer simplifies mechanic gearing. Easy to maintain, little wear and long life.

youdao