| 释义 | 
		Definition of case-hardened in English: case-hardenedadjective  1(of a material) having a hard surface. Example sentencesExamples -  When the stone was properly seasoned, the exposed surfaces were case-hardened, creating a finish more resistant to weathering.
 
 - 1.1 (of iron or steel) having been given a hard surface by being carburized.
 a case-hardened steel anvil Example sentencesExamples -  The sixshooter comes in 3 1/2-inch and 4 1/2-inch barrels and sports a standard blue finish with case-hardened frame.
 -  They included but were not limited to extra long or extra short barrels, extra heavy or extra light barrels, set triggers, pistol grip stocks, shotgun butts, color case-hardened actions, and you get the picture.
 -  Revolvers include the 1873 Single Action in blue / case-hardened, nickel and stainless steel finishes, plus an enhanced photo-engraved model.
 -  Super Stud ATV tire chains are made of case-hardened alloy chain heat-treated as a single unit after assembly, and uses two studs on every other link for maximum traction.
 -  Dual-sided hinges with case-hardened steel pins further bolster security.
 -  The bolts are similarly machined from case-hardened steel alloy.
 -  First, in a case-hardened steel, the hardenability of both case and core must be considered.
 -  Originally the barrels of 1888 Springfields were blued and the breeches were case-hardened.
 -  It is made of 14-gauge steel and features a pry-resistant door that locks with four half-inch diameter, case-hardened steel bolts.
 -  Fusion-welded overlays have strong bonds, but the primary surface-hardened steels used in wear applications with fatigue loads include heavy case-hardened steels and flame or induction-hardened steels.
 
  - 1.2 Made callous or tough by experience.
 a case-hardened politician Example sentencesExamples -  Sometimes, even when you are a case-hardened professional, you see history differently.
 -  But those same flames also case-hardened developing nations.
 -  But, regardless of how well the interviewers are trained, case-hardened criminals are unlikely to take these bogus coppers seriously, and might find it easy to ‘pull the wool over their eyes’.
 -  It's just that case-hardened nit-pickers like me can't help noticing these things.
 
 Synonyms cynical, tough, hardened, hard-bitten, hard-headed, callous, as hard as nails, unsentimental, lacking sentiment, world-weary, toughened by experience  
    Definition of case-hardened in US English: case-hardenedadjective 1(of a material) having a hard surface. Example sentencesExamples -  When the stone was properly seasoned, the exposed surfaces were case-hardened, creating a finish more resistant to weathering.
 
 - 1.1 (of iron or steel) having been given a hard surface by being carburized.
 a case-hardened steel anvil Example sentencesExamples -  Super Stud ATV tire chains are made of case-hardened alloy chain heat-treated as a single unit after assembly, and uses two studs on every other link for maximum traction.
 -  First, in a case-hardened steel, the hardenability of both case and core must be considered.
 -  Originally the barrels of 1888 Springfields were blued and the breeches were case-hardened.
 -  Fusion-welded overlays have strong bonds, but the primary surface-hardened steels used in wear applications with fatigue loads include heavy case-hardened steels and flame or induction-hardened steels.
 -  Revolvers include the 1873 Single Action in blue / case-hardened, nickel and stainless steel finishes, plus an enhanced photo-engraved model.
 -  The bolts are similarly machined from case-hardened steel alloy.
 -  It is made of 14-gauge steel and features a pry-resistant door that locks with four half-inch diameter, case-hardened steel bolts.
 -  Dual-sided hinges with case-hardened steel pins further bolster security.
 -  The sixshooter comes in 3 1/2-inch and 4 1/2-inch barrels and sports a standard blue finish with case-hardened frame.
 -  They included but were not limited to extra long or extra short barrels, extra heavy or extra light barrels, set triggers, pistol grip stocks, shotgun butts, color case-hardened actions, and you get the picture.
 
  - 1.2 Made callous or tough by experience.
 a case-hardened politician Example sentencesExamples -  It's just that case-hardened nit-pickers like me can't help noticing these things.
 -  But those same flames also case-hardened developing nations.
 -  Sometimes, even when you are a case-hardened professional, you see history differently.
 -  But, regardless of how well the interviewers are trained, case-hardened criminals are unlikely to take these bogus coppers seriously, and might find it easy to ‘pull the wool over their eyes’.
 
 Synonyms cynical, tough, hardened, hard-bitten, hard-headed, callous, as hard as nails, unsentimental, lacking sentiment, world-weary, toughened by experience  
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