self-cleaning filter
21Wrench — For other uses, see Wrench (disambiguation). A set of chrome vanadium metric wrenches, open at one end, box/ring at the other. This type is commonly known as a combination wrench. A wrench or spanner is a tool used to provide grip and mechanical… …
22Swimming 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… …
23List of Dyson products — Dyson is a British company and manufacturer of vacuum cleaners that use cyclonic separation. Originally made in the UK, all products are now made in Malaysia. Contents 1 Vacuum cleaners 1.1 Discontinued …
24Business 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… …
25Coffeemaker — Coffeepot redirects here. For the populated place in Gila County, Arizona, United States, see Coffeepot, Arizona. Coffeemakers at the Wikimedia Foundation office Coffeemakers or coffee machines are cooking appliances used to brew coffee without… …
26Sterilization (microbiology) — Sterilization (or sterilisation, see spelling differences) refers to any process that effectively kills or eliminates transmissible agents (such as fungi, bacteria, viruses, spore forms, etc.) from a surface, equipment, article of food or… …
27Coffee percolator — Percolator A coffee percolator is a type of pot used to brew coffee. The name stems from the word percolate which means to cause (a solvent) to pass through a permeable substance especially for extracting a soluble constituent.[1] In the case of… …
28Water well — Village pump redirects here. For information on Wikipedia project related discussions see Wikipedia:Village pump. Water well at the Wald monastery in Germany. A water well is an excavation or structure created in the ground by digging, driving,… …
29environment — environmental, adj. environmentally, adv. /en vuy reuhn meuhnt, vuy euhrn /, n. 1. the aggregate of surrounding things, conditions, or influences; surroundings; milieu. 2. Ecol. the air, water, minerals, organisms, and all other external factors… …
30Closure (computer science) — In computer science, a closure (also lexical closure, function closure, function value or functional value) is a function together with a referencing environment for the non local variables of that function.[1] A closure allows a function to… …
