auxiliary feed pump
41Eifel Aqueduct — The Eifel Aqueduct was one of the longest aqueducts of the Roman Empire. It shows the great skill of the Roman engineers, whose level of technical achievement was lost in the Middle Ages and regained only in recent times.The aqueduct, constructed …
42Sewage treatment — The objective of sewage treatment is to produce a disposable effluent without causing harm to the surrounding environment, and also prevent pollution.[1] Sewage treatment, or domestic wastewater treatment, is the process of removing contaminants… …
43Onychophora — Temporal range: 40–0 Ma …
44Electric motor — For other kinds of motors, see motor (disambiguation). For a railroad electric engine, see electric locomotive. Various electric motors. A 9 volt PP3 transistor battery is in the center foreground for size comparison. An electric motor converts… …
45Airbus A350 — infobox Aircraft subtemplate= Infobox Airbus airliners name = Airbus A350 type = Wide body jet airliner manufacturer = Airbus caption = Airbus A350 XWB concept first flight = 2011 (scheduled) introduction = 2013 (scheduled) status = Under… …
46United States Border Patrol — For other uses of Border Patrol , see Border Patrol (disambiguation). United States Border Patrol Common name Border Patrol Abbreviation USBP …
47Earthship — An Earthship refers to a passive solar home made of natural and recycled materials. Designed and marketed by Earthship Biotecture of Taos, NM, the homes are primarily constructed to work autonomous and are generally made of earth filled tires,… …
48BN-600 reactor — The BN 600 reactor is a sodium cooled fast breeder reactor built at the Beloyarsk Nuclear Power Station, in Zarechny, Sverdlovsk Oblast, Russia. Designed for 600 MW (electric), it produces 560 MW (electric) dispatching energy to the Middle Urals… …
49theatre — /thee euh teuhr, theeeu /, n. theater. * * * I Building or space in which performances are given before an audience. It contains an auditorium and stage. In ancient Greece, where Western theatre began (5th century BC), theatres were constructed… …
50Ethereal being — Water nymph by John Collier, 1923. Ethereal beings, according to some belief systems and occult theories, are mystic entities that usually are not made of ordinary matter. Despite the fact that they are believed to be essentially incorporeal,… …
