breechloading
a . 后膛装填的,后装式的
Gun \
Gun \ (
g [
u ^]
n ),
n . [
OE .
gonne ,
gunne ;
of uncertain origin ;
cf .
Ir .,
Gael ., &
LL .
gunna ,
W .
gum ;
possibly (
like cannon )
fr .
L .
canna reed ,
tube ;
or abbreviated fr .
OF .
mangonnel ,
E .
mangonel ,
a machine for hurling stones .]
1 .
A weapon which throws or propels a missile to a distance ;
any firearm or instrument for throwing projectiles ,
consisting of a tube or barrel closed at one end ,
in which the projectile is placed ,
with an explosive charge (
such as guncotton or gunpowder )
behind ,
which is ignited by various means .
Pistols ,
rifles ,
carbines ,
muskets ,
and fowling pieces are smaller guns ,
for hand use ,
and are called {
small arms }.
Larger guns are called {
cannon },
{
ordnance }, {
fieldpieces }, {
carronades }, {
howitzers },
etc .
See these terms in the Vocabulary .
[
1913 Webster ]
As swift as a pellet out of a gunne When fire is in the powder runne . --
Chaucer .
[
1913 Webster ]
The word gun was in use in England for an engine to cast a thing from a man long before there was any gunpowder found out . --
Selden .
[
1913 Webster ]
2 . (
Mil .)
A piece of heavy ordnance ;
in a restricted sense ,
a cannon .
[
1913 Webster ]
3 .
pl . (
Naut .)
Violent blasts of wind .
[
1913 Webster ]
Note :
Guns are classified ,
according to their construction or manner of loading as {
rifled }
or {
smoothbore },
{
breech -
loading }
or {
muzzle -
loading }, {
cast }
or {
built -
up guns };
or according to their use ,
as {
field },
{
mountain }, {
prairie }, {
seacoast },
and {
siege guns }.
[
1913 Webster ]
{
Armstrong gun },
a wrought iron breech -
loading cannon named after its English inventor ,
Sir William Armstrong .
{
Big gun }
or {
Great gun },
a piece of heavy ordnance ;
hence (
Fig .),
a person superior in any way ;
as ,
bring in the big guns to tackle the problem .
{
Gun barrel },
the barrel or tube of a gun .
{
Gun carriage },
the carriage on which a gun is mounted or moved .
{
Gun cotton } (
Chem .),
a general name for a series of explosive nitric ethers of cellulose ,
obtained by steeping cotton in nitric and sulphuric acids .
Although there are formed substances containing nitric acid radicals ,
yet the results exactly resemble ordinary cotton in appearance .
It burns without ash ,
with explosion if confined ,
but quietly and harmlessly if free and open ,
and in small quantity .
Specifically ,
the lower nitrates of cellulose which are insoluble in ether and alcohol in distinction from the highest (
pyroxylin )
which is soluble .
See {
Pyroxylin },
and cf . {
Xyloidin }.
The gun cottons are used for blasting and somewhat in gunnery :
for making celluloid when compounded with camphor ;
and the soluble variety (
pyroxylin )
for making collodion .
See {
Celluloid },
and {
Collodion }.
Gun cotton is frequenty but improperly called {
nitrocellulose }.
It is not a nitro compound ,
but an ester of nitric acid .
{
Gun deck }.
See under {
Deck }.
{
Gun fire },
the time at which the morning or the evening gun is fired .
{
Gun metal },
a bronze ,
ordinarily composed of nine parts of copper and one of tin ,
used for cannon ,
etc .
The name is also given to certain strong mixtures of cast iron .
{
Gun port } (
Naut .),
an opening in a ship through which a cannon '
s muzzle is run out for firing .
{
Gun tackle } (
Naut .),
the blocks and pulleys affixed to the side of a ship ,
by which a gun carriage is run to and from the gun port .
{
Gun tackle purchase } (
Naut .),
a tackle composed of two single blocks and a fall . --
Totten .
{
Krupp gun },
a wrought steel breech -
loading cannon ,
named after its German inventor ,
Herr Krupp .
{
Machine gun },
a breech -
loading gun or a group of such guns ,
mounted on a carriage or other holder ,
and having a reservoir containing cartridges which are loaded into the gun or guns and fired in rapid succession .
In earlier models ,
such as the {
Gatling gun },
the cartridges were loaded by machinery operated by turning a crank .
In modern versions the loading of cartidges is accomplished by levers operated by the recoil of the explosion driving the bullet ,
or by the pressure of gas within the barrel .
Several hundred shots can be fired in a minute by such weapons ,
with accurate aim .
The {
Gatling gun }, {
Gardner gun }, {
Hotchkiss gun },
and {
Nordenfelt gun },
named for their inventors ,
and the French {
mitrailleuse },
are machine guns .
{
To blow great guns } (
Naut .),
to blow a gale .
See {
Gun },
n .,
3 .
[
1913 Webster PJC ]
Breech -
loading \
Breech "-
load `
ing \,
a .
Receiving the charge at the breech instead of at the muzzle .
[
1913 Webster ]
Breech pin
安装中文字典英文字典查询工具!
中文字典英文字典工具:
复制到剪贴板
英文字典中文字典相关资料:
Implicit Differentiation Calculator Solver - SnapXam Implicit Differentiation Calculator online with solution and steps Detailed step by step solutions to your Implicit Differentiation problems with our math solver and online calculator
Implicit differentiation calculator - MathCracker. com This calculator will help you to conduct implicit differentiation for an equation that involves the variables x and y You need to provide a valid equation like x^2 + y^2 = 1, or xy - x^2 y^2 = 0, etc
implicit differentiation calculator - Wolfram|Alpha Compute answers using Wolfram's breakthrough technology knowledgebase, relied on by millions of students professionals For math, science, nutrition, history, geography, engineering, mathematics, linguistics, sports, finance, music…
Implicit Derivative Calculator | Calculator. now Find implicit derivatives instantly with this easy-to-use calculator Enter your equation, choose display options, and view step-by-step solutions and evaluations