| 영문 | symmetry | 한글 | 대칭 |
|---|---|---|---|
| 설명 | 점이나 또는 평면에서 양쪽에 있는 부분이 똑같은 형으로 배치되어 있는 것. 점인 경우는 점대칭, 평면인 경우는 평면대칭이라 한다. 평면상에 두 개의 도형 F와 F-가 있을 때 F상의 점 P와 F-상의 점 P-를 대응시켜 대응하는 점 P와 P-를 연결하는 항상 하나의 정점 O로써 이등분된다면 도형 F와 F-는 점 O에 대하여 점대칭이다. 또한 평면상의 두 도형 F와 F-가 있을 때 F상의 점 P와 F-상의 점 P-를 대응시켜 대응하는 점 P와 P-를 연결한 선이 항상 일정한 직선1에 의해 수직 이등분되면 도형 F와 F-는 직선에 대해 선대칭이다. 같은 방법으로 공간에서의 면대칭을 정의할 수 있다. |
||
| ASI | addiction severity index; anxiety state inventory; anxiety status inventory; arthroscopic screw inst... |
|---|---|
| CHS | central hypoventilation syndrome; Chediak-Higashi syndrome; cholinesterase; chondroitin sulfate; com... |
| CM | California mastitis [test]; calmodulin; capreomycin; carboxymethyl; cardiac murmur; cardiac muscle; ... |
| DCS | decompression sickness; dense canalicular system; diffuse cortical sclerosis; dorsal column stimulat... |
| DHS | delayed hypersensitivity; diabetic hyperosmolar state; duration of hospital stay; dynamic hip screw |
| DCS | Dynamic Condylar Screw |
|---|---|
| DHS | Dynamic Hip Screw |
| NCS | Non-crystallographic symmetry |
| DSE | dyad symmetry element |
| axis of symmetry | An axis through a particle (e.g., a virus) on such a plane that, if the particle is rotated on the axis, there are two or more positions at which the particle appears identical. (05 Mar 2000) |
|---|---|
| bilateral symmetry | <biology> Describes an organism which is divisible into equal mirror halves in one plane only. (09 Oct 1997) |
| pseudo-symmetry | <chemistry> A kind of symmetry characteristic of certain crystals which from twinning, or other causes, come to resemble forms of a system other than that to which they belong, as the apparently hexagonal prisms of aragonite. Origin: Pseudo- + symmetry. Source: Websters Dictionary (01 Mar 1998) |
| symmetry | 1. A due proportion of the several parts of a body to each other; adaptation of the form or dimensions of the several parts of a thing to each other; the union and conformity of the members of a work to the whole. 2. <biology> The law of likeness; similarity of structure; regularity in form and arrangement; orderly and similar distribution of parts, such that an animal may be divided into parts which are structurally symmetrical. Bilateral symmetry, or two-sidedness, in vertebrates, etc, is that in which the body can be divided into symmetrical halves by a vertical plane passing through the middle; radial symmetry, as in echinoderms, is that in which the individual parts are arranged symmetrically around a central axis; serial symmetry, or zonal symmetry, as in earthworms, is that in which the segments or metameres of the body are disposed in a zonal manner one after the other in a longitudinal axis. This last is sometimes called metamerism. 3. <botany> Equality in the number of parts of the successive circles in a flower. Likeness in the form and size of floral organs of the same kind; regularity. Axis of symmetry. <geometry> See Axis. Respective symmetry, that disposition of parts in which only the opposite sides are equal to each other. Origin: L. Symmetria, Gr.; with, together + a measure: cf. F. Symetrie. See Syn-, and Meter rhythm. Source: Websters Dictionary (01 Mar 1998) |
| symmetry axis | <radiobiology> The straight line (usually vertical) through the centre of a configuration, when the configuration is symmetric to all (axisymmetric, like the tokamak) or some (periodic, like the stellarator) rotations about this line. Usually the z-axis. (09 Oct 1997) |
| dyad symmetry element | Dyad symmetry element bound by serum response factor to control the expression of c fos. (18 Nov 1997) |
| dyad symmetry of DNA | <molecular biology> Two areas of a DNA molecule whose base pair sequences are repeats of each other, inverted relative to each other, or are palindromes. (09 Oct 1997) |
| inverse symmetry | Correspondence of the right or left side of an asymmetrical individual to the left or right side of another. (05 Mar 2000) |
| afterloading screw | A device for setting the length at which a contracting muscle encounters an afterload. (05 Mar 2000) |
| primary screw-worm | An obligatory screw-worm that can penetrate normal tissues and feed as a primary invader. The important myiasis flies of man that serve as p. Screw-worm's are Cochliomyia hominivorax, Chrysomyia bezziana, and Wohlfahrtia magnifica. (05 Mar 2000) |
| screw | 1. To turn, as a screw; to apply a screw to; to press, fasten, or make firm, by means of a screw or screws; as, to screw a lock on a door; to screw a press. 2. To force; to squeeze; to press, as by screws. "But screw your courage to the sticking place, And we'll not fail." (Shak) 3. Hence: To practice extortion upon; to oppress by unreasonable or extortionate exactions. "Our country landlords, by unmeasureable screwing and racking their tenants, have already reduced the miserable people to a worse condition than the peasants in France." (swift) 4. To twist; to distort; as, to screw his visage. "He screwed his face into a hardened smile." (Dryden) 5. To examine rigidly, as a student; to subject to a severe examination. To screw out, to press out; to extort. To screw up, to force; to bring by violent pressure. To screw in, to force in by turning or twisting. Origin: Screwed; Screwing. 1. A cylinder, or a cylindrical perforation, having a continuous rib, called the thread, winding round it spirally at a constant inclination, so as to leave a continuous spiral groove, between one turn and the next, used chiefly for producing, when revolved, motion or pressure in the direction of its axis, by the sliding of the threads of the cylinder in the grooves between the threads of the perforation adapted to it, the former being distinguished as the external, or male screw, or, more usually the screw; the latter as the internal, or female screw, or, more usually, the nut. The screw, as a mechanical power, is a modification of the inclined plane, and may be regarded as a right-angled triangle wrapped round a cylinder, the hypotenuse of the marking the spiral thread of the screw, its base equaling the circumference of the cylinder, and its height the pitch of the thread. 2. Specifically, a kind of nail with a spiral thread and a head with a nick to receive the end of the screw-driver. Screws are much used to hold together pieces of wood or to fasten something; called also wood screws, and screw nails. See also Screw bolt, below. 3. Anything shaped or acting like a screw; especially, a form of wheel for propelling steam vessels. It is placed at the stern, and furnished with blades having helicoidal surfaces to act against the water in the manner of a screw. See Screw propeller, below. 4. A steam vesel propelled by a screw instead of wheels; a screw steamer; a propeller. 5. An extortioner; a sharp bargainer; a skinflint; a niggard. 6. An instructor who examines with great or unnecessary severity; also, a searching or strict examination of a student by an instructor. 7. A small packet of tobacco. 8. An unsound or worn-out horse, useful as a hack, and commonly of good appearance. 9. <mathematics> A straight line in space with which a definite linear magnitude termed the pitch is associated (cf. 5th Pitch, 10). It is used to express the displacement of a rigid body, which may always be made to consist of a rotation about an axis combined with a translation parallel to that axis. 10. <zoology> An amphipod crustacean; as, the skeleton screw (Caprella). See Sand screw, under Sand. Archimedes screw, Compound screw, Foot screw, etc. See Archimedes, Compound, Foot, etc. A screw loose, something out of order, so that work is not done smoothly; as, there is a screw loose somewhere. Endless, or perpetual screw, a screw used to give motion to a toothed wheel by the action of its threads between the teeth of the wheel; called also a worm. Lag screw. See Lag. Micrometer screw, a screw with fine threads, used for the measurement of very small spaces. Right and left screw, a screw having threads upon the opposite ends which wind in opposite directions. Screw alley. See Shaft alley. Screw bean. <botany> The larva of an American fly (Compsomyia macellaria), allied to the blowflies, which sometimes deposits its eggs in the nostrils, or about wounds, in man and other animals, with fatal results. Screw wrench. A wrench for turning a screw. A wrench with an adjustable jaw that is moved by a screw. To put the screw, or screws, on, to use pressure upon, as for the purpose of extortion; to coerce. To put under the screw or screws, to subject to presure; to force. Wood screw, a metal screw with a sharp thread of coarse pitch, adapted to holding fast in wood. Origin: OE. Scrue, OF. Escroue, escroe, female screw, F. Ecrou, L. Scrobis a ditch, trench, in LL, the hole made by swine in rooting; cf. D. Schroef a screw, G. Schraube, Icel. Skrfa. Source: Websters Dictionary (01 Mar 1998) |
| screw arteries | Coiled artery's into the uterine mucosa or in the macular region of the retina. (05 Mar 2000) |
| screw elevator | A dental instrument with a threaded extremity used for extracting the root of a broken tooth. (05 Mar 2000) |
| screw joint | A variety of hinge joint in which the elevation and depression, respectively, on the opposing articular surfaces form part of a spiral, flexion being then accompanied by a certain amount of lateral deviation. Synonym: screw joint, spiral joint. (05 Mar 2000) |
| screw pinch | <radiobiology> A variant on the theta pinch, in which axial currents (as in a z pinch, but less intense) produce a poloidal magnetic field (in addition to the usual longitudinal field), thus making a corkscrew field configuration. See: theta pinch, z pinch, pinch device. (09 Oct 1997) |
제품명 |
판매사 |
보험코드 | 성분/함량 | 구분/보험급여 |
|---|
제품명 |
판매사 |
보험코드 | 성분/함량 | 구분/보험급여 |
|---|