Propelling
31Mechanical pencil — A mechanical pencil (U.S. English) or a propelling pencil (UK English)[1][2][3] is a pencil with a replaceable and mechanically extendable solid pigment core called a lead (  / …
32Explosive material — A number of 1.25lb M112 Demolition Charges, consisting of a C 4 compound, sit atop degraded weaponry scheduled for destruction An explosive material, also called an explosive, is a reactive substance that contains a great amount of potential… …
33Turbofan — [ CFM56 3 turbofan, lower half, side view.] A turbofan is a type of jet engine, similar to a turbojet. It essentially consists of a ducted fan with a smaller diameter turbojet engine mounted behind it that powers the fan. Part of the airstream… …
34Artillery — For other uses of the term, see Artillery (disambiguation). Warfare Military history Eras Prehistoric Ancient …
35Nozzle — Rocket nozzle. Water nozzle. A nozzle is a device design …
36Electric bicycle laws — Canada, Europe and the United States have all passed legislation regarding electric bicycles. Most jurisdictions recognize these as distinct from existing moped and motorcycle classifications because they are more akin to bicycles than their… …
377.5 cm KwK 40 — The 7.5 cm KwK 40 (7.5 cm Kampfwagenkanone 40) was a German 7.5 cm Second World War era vehicle mounted gun, used primarily as the chief weapon of the German medium tank the SdKfz.161 Panzerkampfwagen IV (Ausf. F2 models onwards) and the… …
38HAZMAT Class 1 Explosives — Explosives are any substance or article, including a device, which is designed to function by explosion or which, by chemical reaction within itself is able to function in a similar manner even if not designed to function by explosion (unless the …
39shell — less, adj. shell like, adj. /shel/, n. 1. a hard outer covering of an animal, as the hard case of a mollusk, or either half of the case of a bivalve mollusk. 2. any of various objects resembling such a covering, as in shape or in being more or… …
40Component parts of internal combustion engines — Internal combustion engines come in a wide variety of types, but have certain family resemblances, and thus share many common types of components. Contents 1 Combustion chambers 2 Ignition system 2.1 Spark 2.2 Compression …
