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blowpipe    
n. 吹风管

吹风管

blowpipe
n 1: a tube that directs air or gas into a flame to concentrate
heat [synonym: {blowtube}, {blow tube}, {blowpipe}]
2: a tube through which darts can be shot by blowing [synonym:
{blowgun}, {blowpipe}, {blowtube}, {blow tube}]

Blowgun \Blow"gun`\, n.
A tube, as of cane or reed, sometimes twelve feet long,
through which an arrow (sometimes poisoned) or other
projectile may be impelled by the force of the breath. It is
a weapon much used by certain Indians of America and the West
Indies; -- called also {blowpipe}, and {blowtube}. See
{Sumpitan}.
[1913 Webster]


Blowtube \Blow"tube`\, n.
1. A blowgun. --Tylor.
[1913 Webster]

2. A similar instrument, commonly of tin, used by boys for
discharging paper wads and other light missiles.
[1913 Webster]

3. (Glassmaking) A long wrought iron tube, on the end of
which the workman gathers a quantity of "metal" (melted
glass), and through which he blows to expand or shape it;
-- called also {blowing tube}, and {blowpipe}.
[1913 Webster]


Blowpipe \Blow"pipe`\, n.
1. A tube for directing a jet of air into a fire or into the
flame of a lamp or candle, so as to concentrate the heat
on some object.
[1913 Webster]

Note: It is called a mouth blowpipe when used with the mouth;
but for both chemical and industrial purposes, it is
often worked by a bellows or other contrivance. The
common {mouth blowpipe} is a tapering tube with a very
small orifice at the end to be inserted in the flame.
The {oxyhydrogen blowpipe}, invented by Dr. Hare in
1801, is an instrument in which oxygen and hydrogen,
taken from separate reservoirs, in the proportions of
two volumes of hydrogen to one of oxygen, are burned in
a jet, under pressure. It gives a heat that will
consume the diamond, fuse platinum, and dissipate in
vapor, or in gaseous forms, most known substances.
[1913 Webster]

2. A blowgun; a blowtube.
[1913 Webster]

{Blowpipe analysis} (Chem.), analysis by means of the
blowpipe.

{Blowpipe reaction} (Chem.), the characteristic behavior of a
substance subjected to a test by means of the blowpipe.
[1913 Webster]


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