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air rammer
construct. 气动夯锤〔活塞〕; 动夯; 风镐〔冲子〕
met. 气锤; 风镐
tech. 气动活塞; 气动夯锤; 气夯; 气动顶杆; 空气压机; 风动锤
air rammer: 3 phrases in 1 subject
Technology3