modulus
n . 率,系数,模数
率,系数,模数
modulus 模数;模;系数;模量
modulus 模数
modulus n 1 :
an integer that can be divided without remainder into the difference between two other integers ; "
2 is a modulus of 5 and 9 "
2 :
the absolute value of a complex number 3 : (
physics )
a coefficient that expresses how much of a specified property is possessed by a specified substance Modulus \
Mod "
u *
lus \,
n .;
pl . {
Moduli }. [
L .,
a small measure .
See {
Module },
n .] (
Math .,
Mech ., &
Physics )
A quantity or coefficient ,
or constant ,
which expresses the measure of some specified force ,
property ,
or quality ,
as of elasticity ,
strength ,
efficiency ,
etc .;
a parameter .
[
1913 Webster ]
{
Modulus of a machine },
a formula expressing the work which a given machine can perform under the conditions involved in its construction ;
the relation between the work done upon a machine by the moving power ,
and that yielded at the working points ,
either constantly ,
if its motion be uniform ,
or in the interval of time which it occupies in passing from any given velocity to the same velocity again ,
if its motion be variable ; --
called also the efficiency of the machine . --
Mosley . --
Rankine .
{
Modulus of a system of logarithms } (
Math .),
a number by which all the Napierian logarithms must be multiplied to obtain the logarithms in another system .
{
Modulus of elasticity }.
(
a )
The measure of the elastic force of any substance ,
expressed by the ratio of a stress on a given unit of the substance to the accompanying distortion ,
or strain .
(
b )
An expression of the force (
usually in terms of the height in feet or weight in pounds of a column of the same body )
which would be necessary to elongate a prismatic body of a transverse section equal to a given unit ,
as a square inch or foot ,
to double ,
or to compress it to half ,
its original length ,
were that degree of elongation or compression possible ,
or within the limits of elasticity ; --
called also {
Young '
s modulus }.
{
Modulus of rupture },
the measure of the force necessary to break a given substance across ,
as a beam ,
expressed by eighteen times the load which is required to break a bar of one inch square ,
supported flatwise at two points one foot apart ,
and loaded in the middle between the points of support . --
Rankine .
[
1913 Webster ]
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