Constant force spring hanger is a device which puts invariable tension on the thing it hangs in limited displacement.

恒力弹簧支吊架是一种在限定位移内对被支吊物施以恒定张力的装置。

youdao

Constant force spring hanger is a device which puts invariable tension on the thing it hangs in limited displacement.

恒力弹簧支吊架是一种在限定位移内对被支吊物施以恒定张力的装置。

youdao