Graphic projection of the shadow of an object or a surface or a line
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No. 3
Optics on that throw a shadow of the object surface, the shadow of mathematics refer to drawing a face or throw a line
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No. 4
Optics that light irradiation in the shadow of an object projected onto a surface. Mathematically that the shadow graph projected onto a surface or a line. Lu Xun's "Wandering brothers": "neighbor's a guhuai, it projected on the ground, dense natural to enriched his more gloomy mind."
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No. 5
Refers to a surface or a line projected shadows of objects or graphics. Refers to projection of shadow objects. Feng Xuefeng, "Soul Mountain when the storm song": "The reflection of light gray, thick black projection, with her chilly wind, next to each other pushing Rush."
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No. 6
This material objects by analogy he manifested signs. Yang Shuo, "Ma praised": "I see, only some small projection of our time, but these projections, the may also reflect the spirit of this age look it."
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No. 7
Descriptive geometry, with a group of imaginary objects in the shape of the light will be projected onto a surface to, known as "projection." The surface of the obtained patterns, also known as "projection." Projection line from that point is called the "central projection"; projection lines parallel to each other is called "parallel projection." Parallel projection, the projection line and the vertical projection plane called "orthographic projection"; tilt "the oblique projection."
Objects in the formation of too much sunlight shadow (referred shadow) is parallel to the projection. The direction of shadow reflection time, China's ancient sundial timer is based on shadow to observation time. Object on a light bulb is formed under irradiation of a shadow is the central projection.
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百科辞典
(0 ogonal projeCtion) x [H corresponds to a unique element in F
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English Expression
n.: aspect, plane, projection, project, (in mathematics) projection, (in art) cast shadow
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