earth-leakage protection
121Zambia — Zambian, adj., n. /zam bee euh/, n. a republic in S Africa: formerly a British protectorate and part of the Federation of Rhodesia and Nyasaland; gained independence 1964; a member of the Commonwealth of Nations. 9,349,975; 288,130 sq. mi.… …
122petroleum 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… …
123Cougar Helicopters Flight 91 — Accident summary Date March 12, 2009 (2009 03 12) Type Main Gearbox Malfunction/ Collision with Water …
124bulkhead — [bulk′hed΄] n. [ BULK2 + HEAD] 1. any of the upright partitions separating parts of a ship, airplane, etc. as for protection against fire or leakage 2. a wall or embankment for holding back earth, fire, water, etc. ☆ 3. a boxlike structure built… …
