本实用新型具有弹性回复力性能稳 定、成本低的优点。

The utility model has the advantages of stable performance of the elastic restoring force, and low cost.

youdao

本实用新型具有弹性回复力性能稳 定、成本低的优点。

The utility model has the advantages of stable performance of the elastic restoring force, and low cost.

youdao