| 释义 |
tracking
track·ing T0300800 (trăk′ĭng)n.1. The placing of students in any of several courses of study according to ability, achievement, or needs. Also called ability grouping.2. The position of a magnetic tape as it moves across magnetic heads, as in a VCR.3. The lateral pressure of a phonograph needle as it tracks in a groove.tracking (ˈtrækɪŋ) n1. the act or process of following something or someone2. (Electrical Engineering) electrical engineering a leakage of electric current between two points separated by an insulating material caused by dirt, carbon particles, moisture, etc3. (Automotive Engineering) the way wheels on a vehicle are aligned4. (Electronics) a function of a video cassette recorder, which adjusts the alignment of the heads in order to achieve the best possible audio and video reproduction from each recordingtrack′ sys`tem
n. a system of separating students into groups or classes according to scholastic ability. [1955–60] tracking1. Precise and continuous position-finding of targets by radar, optical, or other means. (DOD)
2. In air intercept, a code meaning, "By my evaluation, target is steering true course indicated."trackingMoving along with a camera to follow the actionThesaurus| Noun | 1. |  tracking - the pursuit (of a person or animal) by following tracks or marks they left behindtrailinganimal, animate being, beast, creature, fauna, brute - a living organism characterized by voluntary movementchase, pursual, pursuit, following - the act of pursuing in an effort to overtake or capture; "the culprit started to run and the cop took off in pursuit" |
Translationsalignement des palespistagepoursuiteinseguimentopuntamentotracking
track downTo search for or pursue someone or something until located or captured. A noun or pronoun can be used between "track" and "down." I've been trying to track down people from my graduating class for our high school reunion. The police tracked down the fugitive to an abandoned warehouse on the outskirts of town. My son really wants this particular toy, so I was wondering if you could help me track it down.See also: down, tracktrack upTo spread dirty tracks or footprints across the surface of something. A noun or pronoun can be used between "track" and "up." Why on earth did you think it was a good idea to ride your bike through the house? You've tracked up all the carpets from the front door all the way to the back yard. The dog bolted into the house and began tracking the floors up with muddy paw prints.See also: track, uptrack someone or something downto search out where someone or something is. I don't know where Anne is. I'll try to track her down. I'll track down Anne for you.See also: down, tracktrack something upto mess something up by spreading around something dirty or messy with one's shoes or feet. Please don't track the floor up! Claire tracked up the floor.See also: track, uptrack downFollow successfully, locate, as in I've been trying to track down that book but haven't had any luck. This term alludes to the literal use of track, "follow the footsteps of." [Second half of 1800s] See also: down, tracktrack downv. To pursue someone or something until found or captured: I tracked down the book I was looking for. The fugitives were missing for a month before the police tracked them down. See also: down, tracktrack upv.1. To cover some surface or area with tracks: The kids tracked up the carpet with mud. In the morning, the newly fallen snow lay prettily, but by the afternoon, people had tracked it up.2. To move north along some path or geographical feature. Used of storms: The storm tracked up the coast. See also: track, uptracking
tracking[′trak·iŋ] (electricity) A leakage or fault path created across the surface of an insulating material when a high-voltage current slowly but steadily forms a carbonized path. (electronics) The condition in which all tuned circuits in a receiver accurately follow the frequency indicated by the tuning dial over the entire tuning range. (engineering) A motion given to the major lobe of a radar or radio antenna such that some preassigned moving target in space is always within the major lobe. The process of following the movements of an object; may be accomplished by keeping the reticle of an optical system or a radar beam on the object, by plotting its bearing and distance at frequent intervals, or by a combination of techniques. (engineering acoustics) The following of a groove by a phonograph needle. Maintaining the same ratio of loudness in the two channels of a stereophonic sound system at all settings of the ganged volume control. (navigation) Navigation which follows the movements of a craft but does not anticipate future positions. Tracking the maintenance of the coordinated variation of the resonant frequencies of oscillatory circuits of, for example, a superheterodyne receiver, that are tuned by means of a single control knob. When a superheterodyne receiver is tuned to a certain signal, the resonant frequency frad of the input circuit and the radio-frequency amplifier is set equal to the frequency fsig of the received signal, and the resonant frequency fosc of the local oscillator is adjusted so that the intermediate frequency (usually equal to the difference between frad and fosc) coincides with the resonant frequency of the intermediate-frequency amplifier.  Figure 1. Schematic of an input and radio-frequency amplifier circuit and of the local oscillator circuit: (L) and (Losc) inductance coils of the circuits; (C) variable capacitors; (C1), (C2), and (C3) padder capacitors; (frad) and (fosc) resonant frequencies of the circuits; the broken line indicates that the capacitance of the capacitors is varied by a single tuning knob
Tracking is generally accomplished by employing identical variable capacitors in all tunable circuits and by using additional fixed capacitors, called padders, in the local oscillator circuit, which must have a frequency different from frad (see Figure 1). In this case, the relations between the angle of rotation of the tuning knob and frad and between the angle of rotation and fosc are not exactly those required—that is, the tracking is only approximate. Nonetheless, the tracking is still sufficiently accurate. In the receivers of the mid-1970’s, the variable capacitors used are either capacitors with mechanically varied capacitance or varactors (varicaps). REFERENCESRadiopriemnye ustroistva. Edited by V. I. Siforov. Moscow, 1974.
Chistiakov, N. I., and V. M. Sidorov. Radiopriemnye ustroistva. Moscow, 1974.V. M. SIDOROV trackingi. The process of following the movements of an object. This may be done by keeping the reticle of an optical system or a radar beam on the object, plotting its bearing and distance at frequent intervals, or a combination of the two. See track (ix).
ii. A motion given to the major lobe of an antenna so that a preassigned moving target in space remains in the lobe's field as long as it is within viewing range.
iii. The process of determining the position of the tips of the propeller blades relative to one another. See blade track and tracking flag.
iv. The mechanical procedure used to bring the blades of the rotor into satisfactory relationship with one another under dynamic conditions, so that all blades rotate in a common plane. See blade track.tracking (text)The spacing between characters in a line of text.This is defined when a font is designed but can often bealtered in order to change the appearance of the text or forspecial effects.
Tracking should not be confused with kerning which dealswith the spacing between certain pairs of characters.
See also leading.tracking(1) See Bluetooth tracker, vehicle tracking and child tracking.
(2) The recording of an event. See tracking cookie and email tracker.
(3) Synchronizing a reading or writing mechanism with a rotating platter. For example, a stylus must maintain a smooth contact with the groove in a vinyl phonograph record. A laser must align itself precisely to the tracks of a CD.
(4) In desktop publishing, the consistent letterspacing of text. Tracking is used to expand or contract the amount of text on a page by expanding or reducing the amount of space between letters. It differs from kerning in that it is applied to an entire font or to a range of text, whereas kerning refers to certain letter pairs.tracking
tracking Cardiac pacing
Pacemaker behaviour in which ventricular pacing is synchronised to sensed atria activity.
Lab medicine
The following of a specimen from when it’s received in the lab until a report is generated.
Medspeak-UK
The monitoring of an individual’s progress along a care pathway, which can help to identify unnecessary delays and discontinuity of care.
Managed care
The evaluation of patient flow in, through and outside of a healthcare network.
Online
The analysis of an Internet user’s search and viewing history on the Web.
Public health
The monitoring of a person’s status in terms of health-related activities—e.g., return to primary care-giver for followup visits.tracking Cardiac pacing Pacemaker behavior in which ventricular pacing is synchronized to sensed atria activity. See Atrial tracking Lab medicine The following of a specimen from the point at which it is received in the lab until a report is generated. See Tissue tracking Managed care The evaluation of Pt flow in, through and outside of a healthcare network. See Referral tracking Online The analysis of an Internet user's 'trail' on the Web. See Clickstream tracking Public health The monitoring of a person's status in terms of health-related activities–eg, return to primary care-giver for followup visits. See Parallel tracking, Surveillance. LegalSeetrackSee TRK
See TRKtracking
Related to tracking: Fedex trackingSynonyms for trackingnoun the pursuit (of a person or animal) by following tracks or marks they left behindSynonymsRelated Words- animal
- animate being
- beast
- creature
- fauna
- brute
- chase
- pursual
- pursuit
- following
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