diameter+of+bore
61Accurizing — is the process of improving the accuracy of a firearm or airgun.cite web |url=http://saami.org/Glossary/index.cfm |title=SAAMI glossary |accessdate=2007 08 30] For firearms, accuracy is defined as the ability to hit exactly what you re aiming at …
62Stroke ratio — In a reciprocating piston engine, the stroke ratio, defined by either bore/stroke ratio or stroke/bore ratio, is a term which is used to describe the ratio between the diameter of the cylinder bore and the length of the piston stroke within its… …
63environment — environmental, adj. environmentally, adv. /en vuy reuhn meuhnt, vuy euhrn /, n. 1. the aggregate of surrounding things, conditions, or influences; surroundings; milieu. 2. Ecol. the air, water, minerals, organisms, and all other external factors… …
64Evolutionary history of plants — Plants have evolved through increasing levels of complexity, from the earliest algal mats, through bryophytes, lycopods, ferns and gymnosperms to the complex angiosperms of today. While the simple plants continue to thrive, especially in the… …
65Trombone — Infobox Instrument color1=#FFD700 color2=#FFEC8B name=Trombone classification= *Wind *Brass *Aerophone range= related= * Sackbut * Buccin * Trumpet * Bass Trumpet articles=List of classical trombonists List of jazz trombonistsThe trombone is a… …
66Shell (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… …
67Oldsmobile V8 engine — The 1966Toronado s 425 V8, the first post war front wheel drive V8 application. The Oldsmobile Rocket V8 was the first post war OHV V8 at General Motors. Production started in 1949, with a new generation introduced in 1964. Like Pontiac, Olds… …
68Drilling rig — For a detailed diagram of a Petroleum drilling rig, see List of components of oil drilling rigs. Drilling rig preparing rock blasting …
69Water well — Village pump redirects here. For information on Wikipedia project related discussions see Wikipedia:Village pump. Water well at the Wald monastery in Germany. A water well is an excavation or structure created in the ground by digging, driving,… …
70military technology — Introduction range of weapons, equipment, structures, and vehicles used specifically for the purpose of fighting. It includes the knowledge required to construct such technology, to employ it in combat, and to repair and replenish it.… …
