A hinged pair of curved iron bars for raising heavy objects, such as stones or timber.
A hinged pair of curved iron bars for raising heavy objects, such as stones or timber.
起重吊钩一种带有铰链的弯铁杆，用来吊起石块或木材等重物
A hinged pair of curved iron bars for raising heavy objects, such as stones or timber.
起重吊钩一种带有铰链的弯铁杆，用来吊起石块或木材等重物