heavy-walled tube
51M2 Browning — This article is about the .50 caliber M2 machine gun. For the Browning .30 06 machine gun, see M1919 Browning machine gun. Browning Machine Gun, Cal. .50, M2, HB M2HB heavy machine gun …
52Lugged steel frame construction — is a method of building bicycle frames using steel tubing and sockets called lugs. For most of the history of the bicycle, steel has been the material of choice for high quality bicycle frames (though its dominance has waned in the last two… …
53M2 Browning machine gun — This article is about the .50 caliber M2 machine gun. For the .30 06 M2 machine gun, see M1919 Browning machine gun. Infobox Weapon|is ranged=yes caption=M2HB machine gun name=Browning Machine Gun, Cal. .50, M2, HB type=Heavy machine gun… …
54Rebreather — A fully closed circuit electronic rebreather (Ambient Pressure Diving Inspiration) Acronym CCUBA (Closed Circuit Underwater Breathing Apparatus); CCR (Closed circuit rebreather), SCR (Semi closed rebreather) Uses Breathing set …
55Glossary of rail terminology — Rail transport Operations Track Maintenance High speed Gauge Stations …
56Shell (projectile) — This article is about the artillery projectile. For the small arms ammunition, see Shotgun shell. Some sectioned shells from the First World War. From left to right: 90 mm fragmentation shell, 120 mm pig iron incendiary shell, 77/14 model 75 mm… …
57passeriform — /pas euhr euh fawrm , peuh ser euh /, adj. of or pertaining to the order Passeriformes; passerine. [ < NL Passeriformes, equiv. to L passer sparrow + iformes IFORMES] * * * ▪ bird Introduction also called passerine or perching bird any… …
58syndrome — The aggregate of symptoms and signs associated with any morbid process, and constituting together the picture of the disease. SEE ALSO: disease. [G. s., a running together, tumultuous concourse; (in med.) a concurrence of symptoms, fr. syn,… …
59Timeline of historic inventions — The timeline of historic inventions is a chronological list of particularly important or significant technological inventions. Note: Dates for inventions are often controversial. Inventions are often invented by several inventors around the same… …
60animal — animalic /an euh mal ik/, animalian /an euh may lee euhn, mayl yeuhn/, adj. /an euh meuhl/, n. 1. any member of the kingdom Animalia, comprising multicellular organisms that have a well defined shape and usually limited growth, can move… …
