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Polypropylene (PP), also known as polypropene, is a thermoplastic polymer used in a wide variety of applications. It is produced via chain-growth polymerization from the monomer propylene . Polypropylene belongs to the group of polyolefins and is partially crystalline and non-polar .
pp, pages (of a book), an example of the convention of doubling the letters in the acronym to indicate plural words, see Acronym and initialism § Representing plurals and possessives Percy Pig , a British brand of pig-shaped fruit-flavoured confectionery products
Unlike BPP, PP is a syntactic rather than semantic class. Any polynomial-time probabilistic machine recognizes some language in PP.In contrast, given a description of a polynomial-time probabilistic machine, it is undecidable in general to determine if it recognizes a language in BPP.
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The Walther PP (German: Polizeipistole, or police pistol) series pistols are blowback-operated semi-automatic pistols, developed by the German arms manufacturer Carl Walther GmbH Sportwaffen. [ 9 ] It features an exposed hammer, a double-action trigger mechanism, [ 10 ] a single-column magazine , and a fixed barrel that also acts as the guide ...
In English orthography, p represents the sound /p/.. A common digraph in English is ph , which represents the sound / f /, and can be used to transliterate φ phi in loanwords from Greek.
President Trump signs the Paycheck Protection Program and Health Care Enhancement Act (H.R. 266), April 24, 2020. The Paycheck Protection Program (PPP) is a $953-billion business loan program established by the United States federal government during the Trump administration in 2020 through the Coronavirus Aid, Relief, and Economic Security Act (CARES Act) to help certain businesses, self ...
The PP under Mariano Rajoy opposed the PSOE government after the PP lost the general election in 2004, arguing that this victory was influenced by the Madrid bombings of 11 March 2004. At a national level, its political strategy has followed two main axes, both linked to Spain's delicate regional politics: Firstly, opposing further ...