rate+too+low
51chemical element — Introduction also called element, any substance that cannot be decomposed into simpler substances by ordinary chemical processes. Elements are the fundamental materials of which all matter is composed. This article considers the… …
52river — river1 riverless, adj. riverlike, adj. /riv euhr/, n. 1. a natural stream of water of fairly large size flowing in a definite course or channel or series of diverging and converging channels. 2. a similar stream of something other than water: a… …
53environmental works — ▪ civil engineering Introduction infrastructure that provides cities and towns with water supply, waste disposal, and pollution control services. They include extensive networks of reservoirs, pipelines, treatment systems, pumping stations …
54Deepwater Horizon oil spill — 2010 oil spill and BP oil spill redirect here. For other oil spills in 2010, see 2010 oil spill (disambiguation). For the 2006 oil spill involving BP, see Prudhoe Bay oil spill. For the drilling rig and explosion, see Deepwater Horizon… …
55PID controller — A block diagram of a PID controller A proportional–integral–derivative controller (PID controller) is a generic control loop feedback mechanism (controller) widely used in industrial control systems – a PID is the most commonly used feedback… …
56Credit rating agency — Corporate finance …
57Population decline — can refer to the decline in population of any organism, but this article refers to population decline in humans. It is a term usually used to describe any great reduction in a human population.[1] It can be used to refer to long term demographic… …
58Economy of the People's Republic of China — Economies of Special Administrative Regions of Hong Kong and Macau are administered separately from the rest of People s Republic of China. Therefore, the information below pertains only to mainland China unless specified otherwise. For the… …
59Tanzania — Tanzanian, n., adj. /tan zeuh nee euh/; Swahili. /tahn zah nee ah/, n. a republic in E Africa formed in 1964 by the merger of the republic of Tanganyika and the former island sultanate of Zanzibar (including Pemba and adjacent small islands).… …
60motion-picture technology — Introduction the means for the production and showing of motion pictures. It includes not only the motion picture camera and projector but also such technologies as those involved in recording sound, in editing both picture and sound, in… …
