perforated-tray column
1Heat exchanger — An interchangeable plate heat exchanger Tubular heat exchan …
2petroleum refining — Introduction conversion of crude oil into useful products. History Distillation of kerosene and naphtha The refining of crude petroleum owes its origin to the successful drilling of the first oil well in Titusville, Pa., in 1859. Prior to… …
3photography, technology of — Introduction equipment, techniques, and processes used in the production of photographs. The most widely used photographic process is the black and white negative–positive system (Figure 1 >). In the camera the lens projects an image of… …
4arts, East Asian — Introduction music and visual and performing arts of China, Korea, and Japan. The literatures of these countries are covered in the articles Chinese literature, Korean literature, and Japanese literature. Some studies of East Asia… …
5printing — /prin ting/, n. 1. the art, process, or business of producing books, newspapers, etc., by impression from movable types, plates, etc. 2. the act of a person or thing that prints. 3. words, symbols, etc., in printed form. 4. printed material. 5.… …
6ceremonial object — ▪ religion Introduction any object used in a ritual or a religious ceremony. Throughout the history of religions and cultures, objects used in cults, rituals, and sacred ceremonies have almost always been of both utilitarian and symbolic… …
7Abaci — Abacus Ab a*cus ([a^]b [.a]*k[u^]s), n.; E. pl. {Abacuses}; L. pl. {Abaci} ( s[imac]). [L. abacus, abax, Gr. a bax] 1. A table or tray strewn with sand, anciently used for drawing, calculating, etc. [Obs.] [1913 Webster] 2. A calculating table or …
8Abacus — Ab a*cus ([a^]b [.a]*k[u^]s), n.; E. pl. {Abacuses}; L. pl. {Abaci} ( s[imac]). [L. abacus, abax, Gr. a bax] 1. A table or tray strewn with sand, anciently used for drawing, calculating, etc. [Obs.] [1913 Webster] 2. A calculating table or frame; …
9Abacus harmonicus — Abacus Ab a*cus ([a^]b [.a]*k[u^]s), n.; E. pl. {Abacuses}; L. pl. {Abaci} ( s[imac]). [L. abacus, abax, Gr. a bax] 1. A table or tray strewn with sand, anciently used for drawing, calculating, etc. [Obs.] [1913 Webster] 2. A calculating table or …
10Abacuses — Abacus Ab a*cus ([a^]b [.a]*k[u^]s), n.; E. pl. {Abacuses}; L. pl. {Abaci} ( s[imac]). [L. abacus, abax, Gr. a bax] 1. A table or tray strewn with sand, anciently used for drawing, calculating, etc. [Obs.] [1913 Webster] 2. A calculating table or …
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