“leader”的概念、定义、翻译、参考文献-科学参考

单词	leader
释义	leader [`lēd·ǝr] ^{BUILDING CONSTRUCTION} See <<downspout>> ^{COMPUTER SCIENCE} A record which precedes a group of detail records, giving information about the group not present in the detail records; for example, ``beginning of batch 17.'' ^ENGINEERING The unrecorded length of magnetic tape that enables the operator to thread the tape through the drive and onto the take-up reel without losing data or recorded music, speech, or such. ^GEOPHYSICS The streamer which initiates the first phase of each stroke of a lightning discharge; it is a channel of very high ion density which propagates through the air by the continual establishment of an electron avalanche ahead of its tip. Also known as leader streamer. ^{GRAPHIC ARTS} 1. A short piece of blank film at each end of a strip of photographic film or reel of motion picture film, used to thread the film through the mechanism of a camera or projector. 2. Lines or rows of dashes or dots used to guide the reader's eye across a printed page. ^{MECHANICAL ENGINEERING} In a hot-air heating system, a duct that conducts heated air to an outlet.
随便看	narrow cut filter narrow gage narrow-gap spark chamber narrows narrow-sector recorder narrow-spectrum antibiotic narsarsukite narwhal N-ary code n-ary composition N-ary pulse-code modulation n-ary tree nasal nasal base breadth nasal bone nasal bridge breadth nasal bridge salient nasal cavity nasal crest nasal height nasal index nasal pit nasal process of the frontal bone nasal process of the maxilla nasal root breadth

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