return of a piston
121Business and Industry Review — ▪ 1999 Introduction Overview Annual Average Rates of Growth of Manufacturing Output, 1980 97, Table Pattern of Output, 1994 97, Table Index Numbers of Production, Employment, and Productivity in Manufacturing Industries, Table (For Annual… …
122Channel Tunnel — Map of the Channel Tunnel Overview Location English Channel (Strait of Dover) Coordinates Folkestone …
123Engine — This article is about a machine to convert energy into useful mechanical motion. For other uses of engine, see Engine (disambiguation). For other uses of motor, see Motor (disambiguation). A V6 internal combustion engine from a Mercedes car An… …
124Frank Whittle — Infobox Person name = Frank Whittle image size = 300px caption = birth name = birth date = birth date|1907|6|1|df=y birth place = Earlsdon, Coventry, England. death date = death date and age|1996|8|9|1907|6|1|df=y death place = Columbia, Maryland …
125Aaron Copland — (  /ˌ …
126Poppet valve — A poppet valve is a valve consisting of a hole, usually round or oval, and a tapered plug, usually a disk shape on the end of a shaft also called a valve stem. The shaft guides the plug portion by sliding through a valve guide. In most… …
127De Havilland Comet — Infobox Aircraft name= DH.106 Comet type= Airliner manufacturer= de Havilland caption= A Royal Air Force Comet C.2 in flight. first flight= 27 July 1949 introduced= 2 May 1952 with BOAC retired= status=In military service only primary user= BOAC… …
128Fuel pump — should not be confused with fuel dispenser, a device that dispenses fuel into an automobile. A high pressure fuel pump on a Yanmar 2GM20 marine diesel engine. A fuel pump is a frequently (but not always) essential component on a car or other… …
