hydraulics 音标拼音: [hɑɪdr'ɔlɪks]
n . 水力学
水力学
hydraulics n 1 :
study of the mechanics of fluids [
synonym : {
fluid mechanics },
{
hydraulics }]
Hydraulics \
Hy *
drau "
lics \,
n . [
Cf .
F .
hydraulique .]
That branch of science ,
or of engineering ,
which treats of fluids in motion ,
especially of water ,
its action in rivers and canals ,
the works and machinery for conducting or raising it ,
its use as a prime mover ,
and the like .
[
1913 Webster ]
Note :
As a science ,
hydraulics includes hydrodynamics ,
or the principles of mechanics applicable to the motion of water ;
as a branch of engineering ,
it consists in the practical application of the mechanics of fluids to the control and management of water with reference to the wants of man ,
including canals ,
waterworks ,
hydraulic machines ,
pumps ,
water wheels ,
etc .
Some writers treat hydraulics and hydrostatics as subdivisions of hydrodynamics .
[
1913 Webster ]
Mechanics \
Me *
chan "
ics \,
n . [
Cf .
F .
m ['
e ]
canique .]
That science ,
or branch of applied mathematics ,
which treats of the action of forces on bodies .
[
1913 Webster ]
Note :
That part of mechanics which considers the action of forces in producing rest or equilibrium is called {
statics };
that which relates to such action in producing motion is called {
dynamics }.
The term mechanics includes the action of forces on all bodies ,
whether solid ,
liquid ,
or gaseous .
It is sometimes ,
however ,
and formerly was often ,
used distinctively of solid bodies only :
The mechanics of liquid bodies is called also {
hydrostatics },
or {
hydrodynamics },
according as the laws of rest or of motion are considered .
The mechanics of gaseous bodies is called also {
pneumatics }.
The mechanics of fluids in motion ,
with special reference to the methods of obtaining from them useful results ,
constitutes {
hydraulics }.
[
1913 Webster ]
{
Animal mechanics } (
Physiol .),
that portion of physiology which has for its object the investigation of the laws of equilibrium and motion in the animal body .
The most important mechanical principle is that of the lever ,
the bones forming the arms of the levers ,
the contractile muscles the power ,
the joints the fulcra or points of support ,
while the weight of the body or of the individual limbs constitutes the weight or resistance .
{
Applied mechanics },
the principles of abstract mechanics applied to human art ;
also ,
the practical application of the laws of matter and motion to the construction of machines and structures of all kinds .
{
orbital mechanics },
the principles governing the motion of bodies in orbit around other bodies under gravitational influence ,
such as artificial Earth satellites .
[
1913 Webster PJC ]
24 Moby Thesaurus words for "
hydraulics ":
beverage ,
blood ,
drink ,
fluid ,
fluid extract ,
fluid mechanics ,
fluidics ,
hydrodynamics ,
hydrogeology ,
hydrography ,
hydrology ,
hydromechanics ,
hydrometry ,
hydrostatics ,
juice ,
latex ,
liquid ,
liquid extract ,
liquor ,
milk ,
sap ,
semiliquid ,
water ,
whey
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