hardness maintenance
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steel — steellike, adj. /steel/, n. 1. any of various modified forms of iron, artificially produced, having a carbon content less than that of pig iron and more than that of wrought iron, and having qualities of hardness, elasticity, and strength varying … Universalium
Cue stick — A pool cue and its major parts.[1]:71–72[2] A cue stick (or simply cue, more specifically pool cue, snooker cue, or billiards cue), is an item of … Wikipedia
Tile — For other uses, see Tile (disambiguation). Decorative tilework in Sheikh Lotf Allah Mosque, Isfahan, Iran early 17th century A tile is a manufactured piece of hard wearing material such as ceramic, stone, metal, or even glass. Tiles are generally … Wikipedia
Eyespot rasbora — Eye Spot Rasbora Eye Spot Rasbora Scientific classification Kingdom: Animalia … Wikipedia
Rasbora dorsiocellata — Taxobox name = Eye Spot Rasbora image width = 240px image caption = Eye Spot Rasbora regnum = Animalia phylum = Chordata classis = Actinopterygii ordo = Cypriniformes familia = Cyprinidae genus = Rasbora species = R. dorsiocellata binomial =… … Wikipedia
Swimming pool sanitation — articleissues refimprove = January 2008 technical = August 2008Swimming pool sanitation refers to both visual clarity and levels of microflora, such as bacteria and viruses in swimming pools. The goal of sanitation is to prevent the spread of… … Wikipedia
ICF Bogie — is a conventional railway bogie used on the majority of Indian Railway main line passenger coaches. The design of the bogie was developed by ICF (Integral Coach Factory), Perumbur, India in collaboration with the Swiss Car Elevator Manufacturing… … Wikipedia
environmental 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 … Universalium
radiation — radiational, adj. /ray dee ay sheuhn/, n. 1. Physics. a. the process in which energy is emitted as particles or waves. b. the complete process in which energy is emitted by one body, transmitted through an intervening medium or space, and… … Universalium
Tai chi chuan — Infobox martial art logo = logocaption = logosize = imagecaption = Yang Chengfu in a posture from the Yang style tai chi chuan solo form known as Single Whip c. 1931 imagesize = name = Tai chi chuan (太極拳) aka = t ai chi ch üan; tai ji quan focus … Wikipedia
Marine aquarium — See also: Reef aquarium A marine aquarium … Wikipedia
