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blowhole
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blowhole

Air passage leading from a sea cave to the cliffs above. Every time a wave rushes into the cave, increased pressure forces water up and out through the opening, causing a spurt of water to appear on the cliff top.
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We've documented several cases where a PWB produces blowholes on a Pb-free wave, but none on a SnPb wave, so copper erosion may play a part in blowhole formation as well.
Bare board concerns: Pb-free alloys exacerbate copper erosion and ... by Shea, Chrys / Circuits Assembly
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Humans help: hurt humpback by Soule, Teresa / New Life Journal
Evident as pinholes, blowholes or fissures, they are generated, alone or in combination with other gases, by the excessive formation of hydrogen ([H.
Controlling cast iron gas defects by Kern, Ronald / Modern Casting
 
 
 
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