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penetration |
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penetrationThe successful unauthorized breach of a security perimeter. See penetration test. penetration 1. Marketing the proportion of the total number of potential purchasers of a product or service who either are aware of its existence or actually buy it 2. another name for depth of field penetration [‚pen·ə′trā·shən] (aerospace engineering) That phase of the letdown from high altitude to a specified approach altitude. (metallurgy) The distance from the original surface of the base metal to that point at which weld fusion ends. A surface defect on a casting caused by molten metal filling voids in the sand mold. (ordnance) Distance to which a projectile sinks into a target. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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However, adding carbons can reduce the formation of mechanical and chemical type penetrations by creating a reducing (oxygen-free) atmosphere within the mold cavity. Analyst Bigue Sagna forecasts a 108 percent mobile penetration by 2010 in Tunisia, which will by then be one of the highest mobile penetrations in the African region. Twenty-two of these communities have surpassed penetrations of 10 percent and five have surpassed 15 percent. |
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