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diaphragm    音标拼音: [d'ɑɪəfr,æm]
n. 横隔膜,控光装置

横隔膜,控光装置

diaphragm
n 1: a mechanical device in a camera that controls size of
aperture of the lens; "the new cameras adjust the diaphragm
automatically" [synonym: {diaphragm}, {stop}]
2: (anatomy) a muscular partition separating the abdominal and
thoracic cavities; functions in respiration [synonym:
{diaphragm}, {midriff}]
3: a contraceptive device consisting of a flexible dome-shaped
cup made of rubber or plastic; it is filled with spermicide
and fitted over the uterine cervix [synonym: {diaphragm},
{pessary}, {contraceptive diaphragm}]
4: electro-acoustic transducer that vibrates to receive or
produce sound waves

Diaphragm \Di"a*phragm\, n. [L. diaphragma, Gr. ?, fr. ? to
fence by a partition wall; dia` through ?, ?, to fence,
inclose; prob. akin to L. fareire to stuff: cf. F.
diaphragme. See {Farce}.]
1. A dividing membrane or thin partition, commonly with an
opening through it.
[1913 Webster]

2. (Anat.) The muscular and tendinous partition separating
the cavity of the chest from that of the abdomen; the
midriff.
[1913 Webster]

3. (Zool.) A calcareous plate which divides the cavity of
certain shells into two parts.
[1913 Webster]

4. (Opt.) A plate with an opening, which is generally
circular, used in instruments to cut off marginal portions
of a beam of light, as at the focus of a telescope.
[1913 Webster]

5. (Mach.) A partition in any compartment, for various
purposes.
[1913 Webster]

{Diaphragm pump}, one in which a flexible diaphragm takes the
place of a piston.
[1913 Webster]

128 Moby Thesaurus words for "diaphragm":
IUD, abdomen, abomasum, acoustical network, bag, barrier,
bay window, beerbelly, belly, birth control device, brattice,
breadbasket, buffer, buffer state, bulkhead, bumper,
capacitor speaker, center, cloison, coaxial speaker, collision mat,
condom, cone, contraceptive, contraceptive foam, core, craw, crop,
crossover network, cushion, diameter, dissepiment, dividing line,
dividing wall, division, dynamic speaker, earphone,
electrodynamic speaker, electromagnetic speaker,
electrostatic speaker, embonpoint, equator, excited-field speaker,
fender, first stomach, full-fidelity speaker, gizzard, gullet, gut,
headphone, headset, heart, high-fidelity speaker,
high-frequency speaker, honeycomb stomach, horn, interior,
interseptum, intrauterine device, kernel, kishkes, loudspeaker,
low-frequency speaker, manyplies, mat, maw, mean, median, middle,
midmost, midrange speaker, midriff, midsection, midst,
monorange speaker, moving-coil speaker, nucleus, omasum,
oral contraceptive, pad, panel, paries, partition, party wall,
paunch, permanent magnet speaker, pessary, pot, potbelly, potgut,
property line, prophylactic, psalterium, pusgut, rennet bag,
reticulum, rubber, rumen, second stomach, separation, septulum,
septum, shock pad, skin, spare tire, speaker, speaker system,
speaker unit, spermicidal jelly, spermicide, stomach, swagbelly,
the pill, thick, thick of things, third stomach, triaxial speaker,
tum-tum, tummy, tweeter, underbelly, ventripotence, voice coil,
waist, waistline, wall, woofer, zone


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