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what determines when should bore and engine
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Metal, wire, needles, shotgun bore? What kind of "gauge?" How many kittens in a rainbow?
The diameter of the projectile.
Bore describes the size of hole in something that has a hole as its main feature, e.g. a gun.
The usage of small-bore tubes is more comfortable for the patient.
The large boar used his tusks to bore through my makeshift shield. I wouldn't want to bore you with the details of my recent boar hunt.
Small bore ngt (Nasogastric tube) is a tube inserted through the nostril (nare) that is flexible and soft (8 French-12 French diameter) used for feedings, and kept in place longer than a large bore ngt. Large bore ngt (Nasogastric tube) is a tube inserted through the nostril (nare) that is less flexible and more firm (14 French diameter or larger) used for feedings, to give medications, and for gastric decompression. It is kept in place for a shorter period than a small bore ngt.
The 620 is large bore while the 640 is medium bore.
Check with your local health inspection branch, they can tell you what the regulations and requirements are for selling and purchasing piercing needles in your area. In most places you must have a valid business license and a health inspection certificate to sell "sterilized big bore needles, like those used in body piercing". Many health inspection branches are enforcing regulations and seizing needles held by unlicensed facilities and individual's.
Concentric swage is used for small bore piping while concentric reducer is used for large bore piping. Zach
The bore and stroke.