| 释义 |
blind spot
blind spotn.1. Anatomy The small, circular, optically insensitive region in the retina where fibers of the optic nerve emerge from the eyeball. It has no rods or cones. Also called optic disk.2. An area that one cannot see because of an obstruction.3. An area where radio reception is weak or nonexistent.4. A subject about which one is markedly ignorant or prejudiced: His niece is his blind spot; in his eyes, she can do no wrong.blind spot n 1. (Physiology) a small oval-shaped area of the retina in which vision is not experienced. It marks the nonphotosensitive site of entrance into the eyeball of the optic nerve. See optic disc 2. a place or area, as in an auditorium or part of a road, where vision is completely or partially obscured or hearing is difficult or impossible 3. a subject about which a person is ignorant or prejudiced, or an occupation in which he or she is inefficient 4. (Broadcasting) a location within the normal range of a radio transmitter with weak reception blind′ spot`
n. 1. a small area of the retina, where it continues to the optic nerve, that is insensitive to light. 2. an area about which one is uninformed or unappreciative. [1860–65] blind spot (blīnd) A point on the retina that is not sensitive to light. The optic nerve attaches to the retina at this point.Thesaurus| Noun | 1. | blind spot - a subject about which you are ignorant or prejudiced and fail to exercise good judgment; "golf is one of his blind spots and he's proud of it"matter, topic, issue, subject - some situation or event that is thought about; "he kept drifting off the topic"; "he had been thinking about the subject for several years"; "it is a matter for the police" | | 2. |  blind spot - the point where the optic nerve enters the retina; not sensitive to lightoptic disc, optic diskretina - the innermost light-sensitive membrane covering the back wall of the eyeball; it is continuous with the optic nervepoint - the precise location of something; a spatially limited location; "she walked to a point where she could survey the whole street" |
Translationsblind (blaind) adjective1. not able to see. a blind man. 瞎的 瞎的2. (with to) unable to notice. She is blind to his faults. 視而不見的 视而不见的3. hiding what is beyond. a blind corner. 隱蔽的 隐蔽的4. of or for blind people. a blind school. 盲人的 盲人的 noun1. (often in plural) a screen to prevent light coming through a window etc. The sunlight is too bright – pull down the blinds! 百葉窗 窗帘，百叶窗 2. something intended to mislead or deceive. He did that as a blind. 掩護，蒙蔽 蒙蔽 verb to make blind. He was blinded in the war. 使失明 使失明ˈblinding adjective1. tending to make blind. a blinding light. 眩目的 眩目的，刺眼的 2. sudden. He realized, in a blinding flash, that she was the murderer. 突然的 突然的ˈblindly adverb 眩目地 眩目地ˈblindness noun 失明 失明blind alley a situation without any way out. This is a blind alley of a job. 死胡同，死巷，行不通 死胡同，绝路 ˈblindfold noun a piece of cloth etc put over the eyes to prevent someone from seeing. The kidnappers put a blindfold over the child's eyes. 眼罩 眼罩 verb to put a blindfold on (some person or animal). 遮眼 遮眼 adjective, adverb with the eyes covered by a cloth etc. She came blindfold into the room. 遮著眼的(地) 遮着眼的（地） blind spot1. any matter about which one always shows lack of understanding. She seems to have a blind spot about physics. 一竅不通 一窍不通2. an area which is impossible or difficult to see due to an obstruction. 死角，盲點 盲点the blind leading the blind one inexperienced or incompetent person telling another about something. My teaching you about politics will be a case of the blind leading the blind. 外行指導外行 外行指导外行blind spot
blind spot1. An area that is not able to be seen, either due to its location outside of the field of vision, or due to some physical obstruction or a defect in one's vision. Often used to describe the areas around a car that cannot be seen with the rear-view or side mirrors. This car has a big blind spot on the right side, so remember to always turn your head to look before merging. Leslie always experiences blind spots when she starts to get a migraine. That security camera has a blind spot—and that's where we'll sneak in.2. By extension, an aspect of one's life or a certain situation that one is ignorant of or that one does not understand fully. Jen has a real blind spot when it comes to her relationships with men trying to take advantage of her wealth.See also: blind, spotblind spotSubject about which one is ignorant or biased. For example, The boss has a blind spot about Henry; he wouldn't fire him for anything, or Dad has a blind spot about opera; he can't see anything good about it. This term uses blind in the sense of "covered or hidden from sight." It has two literal meanings: an insensitive part of the retina and an area outside one's field of vision. The phrase has largely replaced blind side, which survives mainly in the verb to blindside, meaning "to hit someone on an unguarded side" and "to deal an unexpected blow." [Mid-1800s] See also: blind, spota blind spot COMMON A blind spot is an area of knowledge or understanding that you do not have or pay no attention to. The government have a blind spot when it comes to the environment. Patrick's never been great with money — it's a bit of a blind spot with him.See also: blind, spota blind spot 1 an area into which you cannot see. 2 an aspect of something that someone knows or cares little about. These general senses appear to have developed from a mid 19th-century cricketing term for the spot of ground in front of a batsman where a ball pitched by the bowler leaves the batsman undecided whether to play forward to it or back.See also: blind, spota/somebody’s ˈblind spot a small part of a subject that somebody does not understand or know anything about: I’m a real music lover but I have to say that modern jazz is a bit of a blind spot with me.See also: blind, spotblind spot
blind spot Anatomy a small oval-shaped area of the retina in which vision is not experienced. It marks the nonphotosensitive site of entrance into the eyeball of the optic nerve Blind Spot (1) In acoustics, a region (acoustical shadowed zone) in which the sound of remote powerful sources, such as artillery fire and explosions, cannot be heard, although it is heard again at greater distances (in the “anomalous audibility zone”). On the surface of the earth blind spots usually have the shape of an irregular ring surrounding the sound source. Two or even three blind spots separated by anomalous audibility zones are sometimes observed. The inner radius of the first blind spot is usually 20–80 km and occasionally reaches 150 km; the outer radius may be as great as 150–400 km. The refraction of sound in the atmosphere is the reason for the formation of blind spots. Since the temperature in the lower layers of the atmosphere decreases with altitude (to minus 50°-75°C at an altitude of 15–20 km), sound beams are deflected upward, moving away from the surface of the earth. At an altitude of 40–60 km the temperature rises once again (to 0°-30°C), the beams are bent downward and, passing over the blind spot, return to the surface of the earth, thus forming an anomalous audibility zone. The second and third anomalous audibility zones occur as a result of the first and second reflections of the sound beams from the surface of the earth. The wind changes the shape of sound beams, which may lead to significant distortion of the annular shape of the blind spot and may even break the ring. The study of the anomalous propagation of sound is one method of determining temperatures in the middle atmosphere. A similar phenomenon is often observed during the propagation of sound or ultrasound at sea. REFERENCESArabadzhi, V. I. “Zvuk zondiruet atmosferu.” Priroda, 1968, no. 5, pp. 78–82.
Khrgian, A. Kh. Fizika atmosfery. Leningrad, 1969. Section 74.
Tolstoi, I., and K. S. Klei. Akustika okeana. Moscow, 1969. Chapter 5.V. A. POLIANSKAIA(2) In radio physics, a region of space within which there is no reception of signals from shortwave transmitters or where the signals are much weaker than signals received nearer than or beyond the region.
Blind Spot the site of exit on the optic nerve from the retina. The blind spot is situated in the fundus of the eye below the region of maximum visual acuity. Individual nerve fibers join to form the optic nerve near the blind spot, which does not have photosensitive elements and therefore does not perceive light stimuli. A circular ridge, called the optic disk, is formed where the fibers converge in the fundus of the eye. The optic disk surrounds a depression from whose temporal side retinal blood vessels grow into the eye. Optic-nerve bundles exit from the eye through perforations in the optic foramen of sclera, that is, the portion of sclera in the region of the blind spot. blind spot[′blīnd ‚spät] (engineering) An area on a filter screen where no filtering occurs. Also known as dead area. (neuroscience) A place on the retina of the eye that is insensitive to light, where the optic nerve passes through the eyeball's inner surface. blind spoti. An area from which radio or radar echoes cannot be received.
ii. An area on the airport not visible from the control tower.
iii. Any part of the aircraft that obstructs the sight of the pilot or crew.blind spot
spot [spot] a circumscribed area or place, usually distinguished by its color; see also macula and tache.actual focal spot the section of a focal spot on which there is intersection of an electron beam with an anode of an x-ray tube.Bitot's s's foamy gray triangular spots of keratinized epithelium on the conjunctivae, a sign of vitamin A deficiency.blind spot 1. optic disk.2. mental scotoma.café au lait spot a light brown pigmented macule seen in neurofibromatosis and albright's syndrome.cherry-red spot the choroid appearing as a red circular area surrounded by gray-white retina, as viewed throught the fovea centralis in tay-sachs disease. Called also Tay's spot.cotton-wool spot white or gray soft-edged opacities in the retina composed of cytoid bodies; seen in hypertensive retinopathy, lupus erythematosus, and numerous other conditions.effective focal spot the size of a projected focal spot in a specified direction measured with a quality assurance test tool such as the slit camera.focal spot 1. the object of a patient's gaze during distraction techniques.2. a small area of an x-ray target that receives the main electron stream.Forschheimer s's a fleeting skin eruption consisting of discrete rose spots on the soft palate sometimes seen in rubella just prior to the onset of the skin rash.Koplik's s's small, irregular, bright red spots on the buccal and lingual mucosa, with a minute bluish white speck in the center of each; they are pathognomonic of beginning measles.liver spot 1. a lay term for lentigo" >senile lentigo.2. (in pl.) tinea versicolor.mental blind spot mental scotoma.mongolian spot a type of congenital brown to gray-blue nevus; see also mongolian spot.Roth's s's round or oval white spots consisting of coagulated fibrin seen in the retina in a number of diseases in which a vascular insult resulting in hemorrhage is followed by healing.Tay's spot cherry-red spot.phys·i·o·log·ic sco·to·mathe negative scotoma in the visual field, corresponding to the optic disc. Synonym(s): blind spot (1) blind spotn. Anatomy The small, circular, optically insensitive region in the retina where fibers of the optic nerve emerge from the eyeball. It has no rods or cones. Also called optic disk.Ophthalmology
(1) A small circumscribed area of the retina where the optic nerve enters the eye; occurs normally in all eyes
(2) Any gap in the visual field corresponding to an area of the retina where no visual cells are present; associated with eye disease; optic disk
Psychiatry An area of a person’s personality of which he is totally unaware, since recognition would cause painful emotions
Public health A physical space behind a driver’s outer shoulder between that seen by the rear-view mirrors mounted on the inside and outside of a carblind spot Ophthalmology 1. A small area of the retina where the optic nerve enters the eye; occurs normally in all eyes.2. Any gap in the visual field corresponding to an area of the retina where no visual cells are present; associated with eye disease; optic disk, see there Psychiatry An area of a person's personality of which he is totally unaware, since recognition would cause painful emotions Public health A physical space behind a driver's outer shoulder between that seen by the rear-view mirrors mounted on the inside and outside of a car.men·tal sco·to·ma (men'tăl skŏ-tō'mă) Absence of insight into, or inability to comprehend, items relative to a subject with content that is highly emotional to the person.
Synonym(s): blind spot (2) .
op·tic disc (op'tik disk) [TA] An oval area of the ocular fundus devoid of light receptors where the axons of the retinal ganglion cells converge to form the optic nerve head.
Synonym(s): discus nervi optici [TA] , blind spot (3) , optic papilla.
phys·i·o·log·ic sco·to·ma (fiz'ē-ŏ-loj'ik skō-tō'mă) The negative scotoma in the visual field, corresponding to the optic disc.
Synonym(s): blind spot (1) . blind spot The projection into space of the optic nerve head (optic disc) on the RETINA. This consists solely of nerve fibres and has no receptor elements (rods or cones). The blind spot lies about 15 to the outer side of whatever point we are looking at because the optic disc lies about 15 to the inner side of the macula.blind spot the point at which the optic nerve leaves the retina of the eye and from which light-sensitive nerve cells (rods and cones) are absent.LegalSeeBlindAcronymsSeeb-splineblind spot
Synonyms for blind spotnoun a subject about which you are ignorant or prejudiced and fail to exercise good judgmentRelated Wordsnoun the point where the optic nerve enters the retinaSynonymsRelated Words |