| 单词 | jackhammer |
| 释义 | jackhammer noun[C] USuk/ˈdʒækˌhæm.ər/us/ˈdʒækˌhæm.ɚ/apneumatic drill 风钻（同 pneumatic drill）Tools
jackhammer| American Dictionaryjackhammer noun[C] us/ˈdʒækˌhæm·ər/apowerfultool,heldin thehandsandoperatedbyairpressure, that is used forbreakinghardsurfacessuch asrockandroads Examplesofjackhammerjackhammer As you know, jackhammers cause angioneurosis, a serious illness caused by vibrations affecting huge numbers of construction workers. FromEuroparl Parallel Corpus - English Their sound has been described as ajackhammerbeing ground in a compactor. From Wikipedia  This example is from Wikipedia and may be reused under a CC BY-SA license.Jackhammerwas once clocked at two hundred blows per minute in testing. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.Additionally, some users of pneumatic jackhammers may use a pneumatic lubricator which is placed in series with the air hose powering the air hammer. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.Use of heavy jackhammers (heaver than 14 kg class) tends to cause cracking of the concrete all around the slots. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.Hand-held jackhammers are typically powered by compressed air, but some use electric motors. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.The effectiveness of thejackhammeris dependent on how much force is applied to the tool. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.The typical approach is to saw cut andjackhammerout the slots for the dowels. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.The typical process is to saw cut andjackhammerout the slots for the dowels. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.Engineers realized that jackhammers could not be employed to remove the sidewalks without risking compromising the structural integrity of the entire bridge. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.At first, it was nothing more than a clatter of riveting jackhammers. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.An observer situated one metre from a vocalizing whale would perceive a volume roughly equivalent to the volume of ajackhammeroperating two metres away. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.This increases the life and performance of thejackhammer. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.If the truck breaks down or for some other reason the concrete hardens in the truck, workers may need to enter the barrel with jackhammers. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.He often uses a heavy-dutyjackhammerin order to get into bank vaults. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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