fig26

Figure 26. Surface morphology of the cladding layer at different frequencies. (A) 13.33 Hz; (B) 20 Hz; (C) 25 Hz; (D) 50 Hz.
Figure 26. Surface morphology of the cladding layer at different frequencies. (A) 13.33 Hz; (B) 20 Hz; (C) 25 Hz; (D) 50 Hz.
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