风镐

fēnggǎo

风镐 — fēnggǎo

1. pneumatic pick; jackhammer; air-powered chipping hammer used in construction and mining

   工人们用风镐凿开了坚硬的路面。 gōngrén men yòng fēnghào záokāi le jiānyìng de lùmiàn — The workers used a pneumatic pick to break through the hard road surface.