(6) v ω = d s d t = π D v 360 1 D x − x 2 According to Figure 2 c, it can be seen that v ω shows an increasing trend from the center to the edge of the brass wire.
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Fabrication of Superhydrophobic Ultra-Fine Brass Wire by Laser Processing.
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The sentences
When the scanning speed increased, the water contact angle also showed a trend of increasing first and then decreased.