fatigue-testing machine
81Chairlift — For the musical group, see Chairlift (band). A stairlift is sometimes called a chairlift . Hunter Mountain chairlift …
82literature — /lit euhr euh cheuhr, choor , li treuh /, n. 1. writings in which expression and form, in connection with ideas of permanent and universal interest, are characteristic or essential features, as poetry, novels, history, biography, and essays. 2.… …
83ultrasonics — /ul treuh son iks/, n. (used with a sing. v.) the branch of science that deals with the effects of sound waves above human perception. [1930 35; see ULTRASONIC, ICS] * * * Vibrational or stress waves in elastic media that have a frequency above… …
84Electromagnetic hypersensitivity — (EHS) sometimes also called electrosensitivity or electrical sensitivity (ES) is a condition in which people experience medical symptoms that they believe are caused by exposure to electromagnetic fields. Although effects of electromagnetic… …
85United Nations — 1. an international organization, with headquarters in New York City, formed to promote international peace, security, and cooperation under the terms of the charter signed by 51 founding countries in San Francisco in 1945. Abbr.: UN Cf. General… …
86postal system — System that allows persons to send letters, parcels, or packages to addressees in the same country or abroad. Postal systems are usually government run and paid for by a combination of user charges and government subsidies. There are early… …
87Curtiss P-40 Warhawk — P 40 redirects here. For other uses, see P 40 (disambiguation). P 40 Warhawk Tomahawk / Kittyhawk A Hawk 87A 3 (Kittyhawk …
88Surface grinding — is used to produce a smooth finish on flat surfaces. It is a widely used abrasive machining process in which a spinning wheel covered in rough particles (grinding wheel) cuts chips of metallic or non metallic substance from a workpiece, making a… …
89Mil Mi-24 — Mi 24 / Mi 25 / Mi 35 Polish Mil Mi 24 Role Attack helicopter with transport capabilities …
90A-26 Invader — See also Martin B 26 Marauder Infobox Aircraft name=A 26 Invader caption=USAAF A 26B 35 DL (AAF Ser. No. 41 39456) type=Light bomber manufacturer=Douglas Aircraft Company designer= first flight=10 July 1942 introduced= retired=1972 status=… …
