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122 0511 Wave04 Z

Note the irregularly shaped holes. Round holes tend to trap heat and dust, whereas tapered shapes induce turbulence that keeps the heat and dust from remaining stationary.
New Wave Brakes

 Note the irregularly shaped holes. Round holes tend to trap heat and dust, whereas tapered shapes induce turbulence that keeps the heat and dust from remaining stationary.  View Related Article

 

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