The three main types of thin film technologies use cadmium-telluride, copper-indium-gallium-selenide and amorphous-silicon to convert sunlight into electricity.
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He introduces the half-dozen main types of clouds as if they were his oldest friends: there is the towering, thunderous cumulonimbus, the beautiful cirrus, the fluffy, fine-weather cumulus.
One of the main complaints of genuinely rural types is that townies with weekend cottages not only force up the price of property, thus driving out the rural young, but also get away with paying only 50% of the standard council tax, on the grounds that they do not use local services as much as full-time residents.
In addition, to the five main categories there are other types of drugs that are subject to restrictions on their use.
The company is made up of two main types of business - luxury goods and sports and lifestyle brands.
Conservatives usually argue two main types of imperfections in the system.
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Consumers see these two types of performance as the main responsibility of company chiefs until the end of the crisis, which we all know is some way away.
In the Lords, committee stage usually takes place in a committee of the whole House or in Grand Committee in the Moses Room, a large room away from the main Chamber, and rarely to other types of committee.
Instead, it attracts two main types of shoppers: the young and the economically desperate.
The act's two main sections target vastly different types of behavior, though each may result in both civil liability and criminal punishment.
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The main author of the San Diego report, Lori Eggert, says that the differences between the three types of elephants mean that conservationists need to be aware of varying levels of threat.
There are four main types of threat that MI5 is on the lookout for.
Officers have said the main problem on Merseyside is with pit-bull terrier types, but all illegal dogs will be collected.
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The only difference between the two types of cyclooxygenase is a small pocket that protrudes, like the thumb of a glove, from the main binding site.
One of the main goals of Energy Points is to help businesses compare different types of projects.
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There are two main types to choose from: implants or reconstruction using the patient's own tissue.
Four main types of spending drive GDP, and each of the four is being held back.
Linda Griffith, a tissue engineer at MIT, said one of the main problems of the idea would be getting all the right cell types to grow in the right places.
And besides, they say, the water from the Colorado River -- the city's main supply -- already has to be treated to remove all types of pollution.
"In terms of long-term strength and the whole threat that we see of the ballistic Shahab missiles and other types of missiles from Iran, this is a main factor why we developed it and deployed it, " he said.
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