| concrete |
From the Latin concretus=compounded. The Romans made concrete with pozzolana and lime. The modern use of reinforced concrete began with the making of flower pots.
출처: www.gardenvisit.com/glossary/glossary.htm
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| concrete |
a mixture of sand, gravel, cement and water which hardens when dry.
출처: www.ainc-inac.gc.ca/pr/pub/bldg/snd/glss_e.html
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| concrete e. |
the thickness of concrete having a density of 2.35 g/cm3 which would afford the same radiation attenuation, under specified conditions, as the material or materials being considered.
출처: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| concrete o.’s |
a stage in reasoning or functioning usually seen in children between the ages of approximately 7 and 11, following the stage of preoperational thinking and preceding that of formal operations; it is characterized by comprehension of relational terms, decrease in egocentricity and increase in the ability to appreciate the perspective of others, understanding of the reversibility of events and ideas as well as of conservation of volume and quantity, and the beginning of logical thought, although it is initially restricted to objects immediately present.
출처: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| concrete t. |
that grounded in the literal, limited in the use or understanding of metaphor or nuance, and representing objects or ideas as specific items rather than as abstractions, generalizations, or totalities. Cf. abstract t.
출처: www.mercksource.com/pp/us/cns/cns_health_library.j...
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