riser 音标拼音: [r'ɑɪzɚ]
n . 起床者,叛徒,起义者,竖板
起床者,叛徒,起义者,竖板
riser n 1 :
a person who rises (
especially from bed ); "
he '
s usually a late riser "
2 :
a vertical pipe in a building [
synonym : {
riser }, {
riser pipe },
{
riser pipeline }, {
riser main }]
3 :
structural member consisting of the vertical part of a stair or step Shrinking \
Shrink "
ing \,
a . &
n .
from {
Shrink }.
[
1913 Webster ]
{
Shrinking head } (
Founding ),
a body of molten metal connected with a mold for the purpose of supplying metal to compensate for the shrinkage of the casting ; --
called also {
sinking head },
and {
riser }.
[
1913 Webster ]
Riser \
Ris "
er \,
n .
1 .
One who rises ;
as ,
an early riser .
[
1913 Webster ]
2 . (
Arch .)
(
a )
The upright piece of a step ,
from tread to tread .
Hence :
(
b )
Any small upright face ,
as of a seat ,
platform ,
veranda ,
or the like .
[
1913 Webster ]
3 . (
Mining )
A shaft excavated from below upward .
[
1913 Webster ]
4 . (
Founding )
A feed head .
See under {
Feed },
n .
[
1913 Webster ]
Feed \
Feed \,
n .
1 .
That which is eaten ;
esp .,
food for beasts ;
fodder ;
pasture ;
hay ;
grain ,
ground or whole ;
as ,
the best feed for sheep .
[
1913 Webster ]
2 .
A grazing or pasture ground . --
Shak .
[
1913 Webster ]
3 .
An allowance of provender given to a horse ,
cow ,
etc .;
a meal ;
as ,
a feed of corn or oats .
[
1913 Webster ]
4 .
A meal ,
or the act of eating . [
R .]
[
1913 Webster ]
For such pleasure till that hour At feed or fountain never had I found . --
Milton .
[
1913 Webster ]
5 .
The water supplied to steam boilers .
[
1913 Webster ]
6 . (
Mach .)
(
a )
The motion ,
or act ,
of carrying forward the stuff to be operated upon ,
as cloth to the needle in a sewing machine ;
or of producing progressive operation upon any material or object in a machine ,
as ,
in a turning lathe ,
by moving the cutting tool along or in the work .
(
b )
The supply of material to a machine ,
as water to a steam boiler ,
coal to a furnace ,
or grain to a run of stones .
(
c )
The mechanism by which the action of feeding is produced ;
a feed motion .
[
1913 Webster ]
{
Feed bag },
a nose bag containing feed for a horse or mule .
{
Feed cloth },
an apron for leading cotton ,
wool ,
or other fiber ,
into a machine ,
as for carding ,
etc .
{
Feed door },
a door to a furnace ,
by which to supply coal .
{
Feed head }.
(
a )
A cistern for feeding water by gravity to a steam boiler .
(
b ) (
Founding )
An excess of metal above a mold ,
which serves to render the casting more compact by its pressure ; --
also called a {
riser }, {
deadhead },
or simply {
feed }
or {
head } --
Knight .
{
Feed heater }.
(
a ) (
Steam Engine )
A vessel in which the feed water for the boiler is heated ,
usually by exhaust steam .
(
b )
A boiler or kettle in which is heated food for stock .
{
Feed motion },
or {
Feed gear } (
Mach .),
the train of mechanism that gives motion to the part that directly produces the feed in a machine .
{
Feed pipe },
a pipe for supplying the boiler of a steam engine ,
etc .,
with water .
{
Feed pump },
a force pump for supplying water to a steam boiler ,
etc .
{
Feed regulator },
a device for graduating the operation of a feeder . --
Knight .
{
Feed screw },
in lathes ,
a long screw employed to impart a regular motion to a tool rest or tool ,
or to the work .
{
Feed water },
water supplied to a steam boiler ,
etc .
{
Feed wheel } (
Mach .),
a kind of feeder .
See {
Feeder },
n .,
8 .
[
1913 Webster ]
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