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t 音标拼音: [t'i] n. 字母t 字母t T) 电报电话服务(美国电话电报公司) MTS T n 1: a base found in DNA (but not in RNA) and derived from pyrimidine; pairs with adenine [synonym: {thymine}, {T}] 2: one of the four nucleotides used in building DNA; all four nucleotides have a common phosphate group and a sugar (ribose) [synonym: {deoxythymidine monophosphate}, {T}] 3: a unit of weight equivalent to 1000 kilograms [synonym: {metric ton}, {MT}, {tonne}, {t}] 4: the 20th letter of the Roman alphabet [synonym: {T}, {t}] 5: thyroid hormone similar to thyroxine but with one less iodine atom per molecule and produced in smaller quantity; exerts the same biological effects as thyroxine but is more potent and briefer [synonym: {triiodothyronine}, {liothyronine}, {T}] 6: hormone produced by the thyroid glands to regulate metabolism by controlling the rate of oxidation in cells; "thyroxine is 65% iodine" [synonym: {thyroxine}, {thyroxin}, {tetraiodothyronine}, {T}] Mute \Mute\, n. 1. One who does not speak, whether from physical inability, unwillingness, or other cause. Specifically: (a) One who, from deafness, either congenital or from early life, is unable to use articulate language; a deaf-mute. (b) A person employed by undertakers at a funeral. (c) A person whose part in a play does not require him to speak. (d) Among the Turks, an officer or attendant who is selected for his place because he can not speak. [1913 Webster] 2. (Phon.) A letter which represents no sound; a silent letter; also, a close articulation; an element of speech formed by a position of the mouth organs which stops the passage of the breath; as, {p}, {b}, {d}, {k}, {t}. [1913 Webster] 3. (Mus.) A little utensil made of brass, ivory, or other material, so formed that it can be fixed in an erect position on the bridge of a violin, or similar instrument, in order to deaden or soften the tone. [1913 Webster] T \T\ (t[=e]), the twentieth letter of the English alphabet, is a nonvocal consonant. With the letter h it forms the digraph th, which has two distinct sounds, as in thin, then. See Guide to Pronunciation, [sect][sect]262-264, and also [sect][sect]153, 156, 169, 172, 176, 178-180. [1913 Webster] The letter derives its name and form from the Latin, the form of the Latin letter being further derived through the Greek from the Ph[oe]nician. The ultimate origin is probably Egyptian. It is etymologically most nearly related to d, s, th; as in tug, duke; two, dual, L. duo; resin, L. resina, Gr. "rhti`nh, tent, tense, a., tenuous, thin; nostril, thrill. See {D}, {S}. [1913 Webster] {T bandage} (Surg.), a bandage shaped like the letter T, and used principally for application to the groin, or perineum. {T cart}, a kind of fashionable two seated wagon for pleasure driving. {T iron}. (a) A rod with a short crosspiece at the end, -- used as a hook. (b) Iron in bars, having a cross section formed like the letter T, -- used in structures. {T rail}, a kind of rail for railroad tracks, having no flange at the bottom so that a section resembles the letter T. {T square}, a ruler having a crosspiece or head at one end, for the purpose of making parallel lines; -- so called from its shape. It is laid on a drawing board and guided by the crosspiece, which is pressed against the straight edge of the board. Sometimes the head is arranged to be set at different angles. {To a T}, exactly, perfectly; as, to suit to a T. [Colloq.] [1913 Webster] 1. True. A {Lisp} compiler by Johnathan A. Rees in 1982 at
{Yale University}. T has {static scope} and is a near-superset of {Scheme}. {Unix} source is available. T is written in itself and compiles to efficient native code. Used as the basis for the Yale {Haskell} system. Maintained by David Kranz Latest version: 3.1. {(ftp://ftp.ai.mit.edu/pub/systems/t3.1)}. A {multiprocessing} version of T is available {(ftp://masala.lcs.mit.edu/pub/mult)}. Runs on {Decstation}, {SPARC}, {Sun-3}, {Vax} under {Unix}, {Encore}, {HP}, {Apollo}, {Macintosh} under {A/UX}. E-mail: E-mail: (1991-11-26) ["The T Manual", Johnathan A. Rees al, Yale U, 1984]. 2. A {functional language}. ["T: A Simple Reduction Language Based on Combinatory Term Rewriting", Ida et al, Proc of Prog Future Generation Computers, 1988]. 3. (lower case) The {Lisp} {atom} used to represent "true", among other things. "false" is represented using the same atom as an empty list, {nil}. This {overloading} of the basic constants of the language helps to make Lisp {write-only code}. 4. In transaction-processing circles, an abbreviation for "transaction". 5. (Purdue) An alternative spelling of "{tee}". T: /T/ 1. [from LISP terminology for ‘true’] Yes. Used in
reply to a question (particularly one asked using The -P convention). In LISP, the constant T means ‘true’, among other things. Some Lisp hackers use ‘T’ and ‘NIL’ instead of ‘Yes’ and ‘No’ almost reflexively. This sometimes causes misunderstandings. When a waiter or flight attendant asks whether a hacker wants coffee, he may absently respond ‘T’, meaning that he wants coffee; but of course he will be brought a cup of tea instead. Fortunately, most hackers (particularly those who frequent Chinese restaurants) like tea at least as well as coffee — so it is not that big a problem.
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