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trepan    
n. 环锯,钻孔机
vt. 用环锯行手术,诱入圈套,欺骗

环锯,钻孔机用环锯行手术,诱入圈套,欺骗

trepan
n 1: a surgical instrument used to remove sections of bone from
the skull [synonym: {trepan}, {trephine}]
2: a drill for cutting circular holes around a center
v 1: cut a hole with a trepan, as in surgery

Trepan \Tre*pan"\, n. [F. tr['e]pan (cf. Sp. tr['e]pano, It.
trepano, trapano), LL. trepanum, fr. Gr. ? a borer, auger,
trepan, fr. ? to bore, ? a hole. Cf. {Trephine}.]
1. (Surg.) A crown-saw or cylindrical saw for perforating the
skull, turned, when used, like a bit or gimlet. See
{Trephine}.
[1913 Webster]

2. (Mining) A kind of broad chisel for sinking shafts.
[1913 Webster]


Trepan \Tre*pan"\, v. t. & i. [imp. & p. p. {Trepanned}; p. pr.
& vb. n. {Trepanning}.] [Cf. F. tr['e]paner. See {Trepan} a
saw.] (Surg.)
To perforate (the skull) with a trepan, so as to remove a
portion of the bone, and thus relieve the brain from pressure
or irritation; to perform an operation with the trepan.
[1913 Webster]


Trepan \Tre*pan"\, n. [See {Trapan}.]
1. A snare; a trapan.
[1913 Webster]

Snares and trepans that common life lays in its way.
--South.
[1913 Webster]

2. a deceiver; a cheat.
[1913 Webster]

He had been from the beginning a spy and a trepan.
--Macaulay.
[1913 Webster]


Trepan \Tre*pan"\, v. t.
To insnare; to trap; to trapan.
[1913 Webster]

Guards even of a dozen men were silently trepanned from
their stations. --De Quincey.
[1913 Webster]


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  • Trepanning - Wikipedia
    Trepanning, also known as trepanation, trephination, trephining or making a burr hole (the verb trepan derives from Old French from Medieval Latin trepanum from Greek trúpanon, literally "borer, auger"), [1] [2] is a surgical intervention in which a hole is drilled or scraped into the human skull
  • Trepanning Specialties
    Trepanning Specialties has the in-house facilities and expertise to trepan or gundrill materials as common as stainless steel to the more "exotic" metals such as Titanium, as well as non-metallic materials such as wood and plastics to make hollow round bars
  • Trepanning - Sandvik Coromant
    What is trepanning? Trepanning is a technique used for drilling larger hole diameters where machine power is limited as it is not as power-consuming as conventional drilling, where the entire hole is converted into chips
  • TREPAN Definition Meaning - Merriam-Webster
    The meaning of TREPAN is to use a trephine on (the skull) to use a trephine on (the skull); to remove a disk or cylindrical core (as from metal for testing)… See the full definition
  • A Hole in the Head: A History of Trepanation
    In another version of the etymology, a quite different triangular instrument for boring a hole in the skull was invented in 1639 by John Woodall, a London surgeon, who also called his instrument a tres fines, which became trefina and then trephine and, eventually, a synonym for trepan More generally, in Renaissance times and later
  • Trepanning Manufacturing Basics - Engineers Edge
    Trepanning Manufacturing Basics Manufacturing Menu Trepanning Manufacturing Basics Trepanning is a manufacturing process used to produce holes or circular grooves by using one or more cutters and revolving them around a center
  • Trepan - Medical Pub
    The trepan, also known as a trephine, is a surgical instrument used to remove a circular section of bone, typically from the skull This tool has been a part of medical practice for centuries, with its origins tracing back to ancient civilizations





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