riding cutoff valve
1Steam engine — A steam engine is a heat engine that performs mechanical work using steam as its working fluid. [ [http://www.britannica.com/EBchecked/topic/564472/steam engine steam engine Britannica Online Encyclopedia ] ] Steam engines have a long history,… …
2Arabian horse — Infobox Horse name= Arabian horse status = DOM image caption= An Arabian Mare altname= Arabian, Arab country= Developed in the Middle East, most notably Arabian peninsula group1= Arabian Horse Association (AHA) (United States) group2=The Arabian… …
3Mercury-Redstone 4 — Mission insignia Mission statistics Mission name Mercury Redstone 4 Spacecraft name Liberty Bell 7 Spacecraft mass 1,286 …
