failure-per-mile rate
41price system — ▪ economics Introduction a means of organizing economic activity. It does this primarily by coordinating the decisions of consumers, producers, and owners of productive resources. Millions of economic agents who have no direct communication …
42Permanent way — The permanent way means the physical elements of the railway line itself: generally the pairs of rails typically laid on sleepers embedded in ballast, intended to carry the ordinary trains of a railway. This page describes British practice and… …
43Macclesfield Canal — Infobox Canal name = Macclesfield Canal caption = Near Congleton o name = m name = company = Macclesfield Canal Company engineer = Thomas Telford a engineer = date act = 1826 date const = 1826 date use = 1831 date comp = 1831 date ext = date… …
44Single-wire earth return — (SWER) or single wire ground return is a single wire transmission line for supplying single phase electrical power from an electrical grid to remote areas at low cost. It is principally used for rural electrification, but also finds use for… …
45Grid energy storage — is used to manage the flow of electrical energy. For large scale load levelling on an interconnected electrical system, electric energy producers send low value off peak excess electricity over the electricity transmission grid to temporary… …
46German autobahns — Autobahn redirects here. For other uses, see Autobahn (disambiguation). A German autobahn sign …
47M1 Abrams — Infobox Weapon name=M1 Abrams caption=US Marine Corps M1A1 on a live fire exercise in Iraq, 2003 origin=United States type=Main battle tank is vehicle=yes service= used by=United States, Australia, Egypt, Kuwait, Saudi Arabia wars=Gulf War, Iraq… …
48William H. Milliken, Jr. — William H. Milliken, Jr. (b. August 19 1897, Philadelphia, Pennsylvania –d. July 4 1969) was a Republican member of the U.S. House of Representatives from Pennsylvania.Milliken graduated from Drexel Institute in Philadelphia. After graduating he… …
49United States — a republic in the N Western Hemisphere comprising 48 conterminous states, the District of Columbia, and Alaska in North America, and Hawaii in the N Pacific. 267,954,767; conterminous United States, 3,022,387 sq. mi. (7,827,982 sq. km); with… …
50Russia — /rush euh/, n. 1. Also called Russian Empire. Russian, Rossiya. a former empire in E Europe and N and W Asia: overthrown by the Russian Revolution 1917. Cap.: St. Petersburg (1703 1917). 2. See Union of Soviet Socialist Republics. 3. See Russian… …
