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Geometric center
| Глоссарий терминов и сокращений по оптическим линзам |
(1) the point of a lens that is midway between the top, bottom, nasal and temporal edges. this point is most always different from the ground optical center; (2) the intersection of the horizontal and vertical center lines of a box that circumscribes the lens shape.
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Cent, английский
- I center
- Centrifugal
Cent, английский
Cent re-type machine, английский
Центровой станок; станок для обработки в центрах
Cent sign, английский
The -? character.
Cent(e)ring, английский
Cent., c., английский
Centa, английский
Centro nacional de tecnologia agropecuaria (el salvador)
Cental, английский
Centar grada, сербский
Centaur, английский
Civil engineering technologies for automatic roadmaking (dsnp)
Centaurea cyanus (cornflower) extract, английский
Centaurea cyanus distillate, английский
Centaurus, латинский
Centaurus, i, m, латинский
Centcon, английский
Centralized control facility
Centelleo, испанский
Centena decies millia [orum, npl], латинский
Centenarian, английский
- Человек ста (и более) лет
- A person who is 100 years or older. there were 2,300 centenarians identified in the 1980 u.s. census.
Centenary, английский
Centennial, английский
An exhibition in philadelphia in 1876 that celebrated america’s 100th birthday.
Centeno, испанский
Intersection, английский
- The intersection of two or more sets is the set of elements that all the sets have in common; the elements contained in every one of the sets. the intersection of the events a and b is written "a∩b," "a and b," and "ab." c.f. union. see also venn diagrams.
- Пересечение
- N пересечение (ант. non-intersection) intersemiotic a межсемиотический translation intersentential a между предложениями (ант. intrasentential) linkage
- The point in which one line crosses another.
- The point at which a deliberate deflection of the trend of a borehole is made.
- The point at which a drill hole enters a specific ore body, fault, or rock material.
- Meeting of two ore bodies or veins, or the point at which a vein or ore body meets a fault, dike or rock strata. 4. the point at which two underground workings connect.
- The intersection of two sets, a and b — written as a b — is a set containing all elements in both a and b. it is also a lisp function that takes two lists as arguments and returns a list containing the elements common to both arguments. see also: list, lisp, union.
Horizontal, английский
- Горизонталь; горизонтальный
- Горизонталь; горизонтальный 287
- At right angles to the direction of gravity; on the level; parallel to the horizon; neither vertical nor inclined.
- A direction parallel to the horizon, or what is commonly termed lying flat. one of the greatest inconveniences navigators have to struggle with is the frequent want of a distinct sight of the horizon. to obviate this a horizontal spinning speculum was adopted by mr. lerson, who was lost in the victory man-of-war, in which ship he was sent out to make trial of his instrument. this was afterwards improved by smeaton, and consists of a well-polished metal speculum about 3-1/2 inches in diameter, inclosed within a circular rim of brass, so fitted that the centre of gravity of the whole shall fall near the point on which it spins. this is the end of a steel axis running through the centre of the speculum, above which it finishes in a square for the convenience of fitting a
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Ghost image, английский
- In spectacle optics, an unwanted secondary image formed by internal reflections from the rear or by reflection from the anterior surface of the cornea and a second reflection from the ocular (eye) surface of a spectacle lens.
- Фантомное изображение
Generating, английский
A rapid roughing process to quickly remove material from a lens. accomplished by cutting tools on a machine. generator, free-form – a type of computercontrolled generator with at least three axes of movement that can cut most continuous lens surface shapes to a level of precision and smoothness that requires only minimal polishing with a free-form polisher. generator, traditional – a type of generator with either two or three axes of movement that can cut only basic spherical and sphero-cylindrical lens surface shapes to a minimal level of smoothness that requires additional fining with a cylinder machine.
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