The paraboloid cavitation pattern is an isolated type; and the initial cavitation number is 0. 2 or so.
渥奇段的空化为体型分离型，初生空化数约为0．2左右。
With the increase of driving frequency, the initial radii range of cavitation bubbles decrease, and the oscillation intensity reduces.
随着声波频率的升高，空化气泡的初始半径取值区间越来越小，空化振荡也越来越弱。
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