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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 - 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 The trepanning tool does not machine the whole diameter, only a ring at th
  • 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
  • TREPAN Definition Meaning - Merriam-Webster
    trepanation ˌtre-pə-ˈnā-shən noun trepan 2 of 4 noun (1) tre· pan ˈtrē-ˌpan tri-ˈpan : a heavy tool used in boring mine shafts
  • Trepan Tools - Five Star Tool
    Our precision-ground trepan form tools are designed to tackle the most intricate geometries and challenging machining tasks, delivering superior results every time Whether it’s solid carbide, brazed carbide, or high-speed steel, we create cutting tools that redefine precision
  • Trepanning: Precision Boring Technique for Deep Holes in Steel Product
    Trepanning is a specialized machining process for creating deep, precise holes in steel components, critical for oil gas, power generation, and heavy machinery manufacturing
  • 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 Trepanning machining is used to produce the following features and parts: Low volume disks from flat stock Disks can be fabricated up to 25 (6 35mm) thick and 6
  • Trepan Definition, Meaning Usage | FineDictionary. com
    (n) trepan An instrument, in the form of a crown-saw, used by surgeons for removing parts of the bones of the skull, in order to relieve the brain from pressure or irritation
  • Trepan Tools - Muskegon Tool
    As the trepanning tool feeds into the work piece, the trepan bit or insert cuts a groove the width of the bit and a solid metal core remains Because only the width of the bit is cut, trepanning is faster and more efficient than drilling with spades or indexable drills
  • Toolex, Inc. : Trepan Tools and Custom Machinging
    The TOOLEX Trepan Tips of ( 875”) and (1 00”) are used to cut a wider groove in tough material that will not yield a tight chip or for simply reducing the core size





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