3 Sentences With "trepans"

How to use trepans in a sentence? Find typical usage patterns (collocations)/phrases/context for "trepans" and check conjugation/comparative form for "trepans". Mastering all the usages of "trepans" from sentence examples published by news publications.

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A trepan, sometimes called a BTA drill bit (after the Boring and Trepanning Association), is a drill bit that cuts an annulus and leaves a center core. Trepans usually have multiple carbide inserts and rely on water to cool the cutting tips and to flush chips out of the hole. Trepans are often used to cut large diameters and deep holes. Typical bit diameters are and hole depth from up to .
As Bormenthal assists, the Professor trepans Sharik's skull and gives him a human pituitary gland. Sharik's torso is also opened and he is given human testicles. These organs were cut from Klim Grigorievich Chugunkin – killed in a brawl – thief- recidivist, an alcoholic and a bully. Only repeated injections of adrenaline prevent the dog from dying on the operating table.
The dockyards produced more than 300,000 hand grenades, the famous carumbe `i (Guaraní for "little turtle"), which, for the pride of Paraguayans in the war, proved more effective than the Belgian designed SIP grenades, used by the Bolivian army) and built and assembled the coachworks of 2,308 trucks (at a rate of five per hour). The dockyards also produced 25,000 mortar grenades and 7,500 aerial bombs. Another of his feats was the making of mortar tubes with 23 columns from old trams. At the same time, 4,300 iron bars and wooden tables were made for stretchers, stoves, autoclaves and even trepans for cranial surgery.