It refers to making emmissions "cleaner" than would otherwise be before any type of filtering/reusing of the emission that is to be "whitenned".
Arrrrhhgg!
This is a chemical engineering process - the refining of petroleum.
Botticello means "little barrel" in Italian. Sandro Botticelli derived his name from this term.
That term refers to the outline shape of the outside of a rifle barrel.
How many litres equals one barrel of oil in Indian term?"
Have only encountered the term used for muzzleloading firearms. The ramrod is used to ram- of push- the bullet down the barrel.
Sorry, but we need more information on the term "round barrel gun".
if you mean CRUDE OIL by term 'oil' then products like petrol,gasoline,asphalt,kerosene,waxes etc. are obtained by fractional distillation or refining of crude oil. In the process of oil refining ,first step is neutralization or removiving of free fatty acids, during this first step soap is produced.
The marking of the nickel steel barrel meant that the rifle could be fired with smokeless powder.This powder created more pressure than black powder.
Not a generally used term- it would be the portion of a gun that holds the barrel. Not present on all guns.
In "The Catbird Seat," the term "are you hollering down the rain barrel" is a Southern colloquial expression meaning that somebody is talking nonsense or exaggerating. It implies that the person's statements are not to be taken seriously or are meaningless. In the story, Mr. Martin uses this phrase to dismiss Mrs. Barrows' outlandish claims.
Threshing is a term used in the process of refining grain. In the Bible people had "threshing floors" The wheat or other grain had to be separated from the stalks. This was done by beating (Threshing) the grain stalks until the grain fell free.
Thread count is a textile term. however The pro carbine has A5 barrel threads.