| 摘要 |
<p>PURPOSE: To completely or substantially restrict bubbles by correcting a vibration follow-up state with the utilization of a second small wave having a substantially opposite phase and the same characteristic as or a substantially equal characteristic to a first pulsation. CONSTITUTION: Two vibrations follow for the same period with a substantially equal vibration, but opposite phases. This unexpected phenomenon is most important to reduce any residual vibrations or residual fluctuations. When two emissions of the same filled gas are synchronized and jetted to bubbles in two symmetric times, first pulses are substantially cancelled because of a destructive interference, and followed by additional vibrations. In order to reduce more an amplitude of the follow-up, at least two emission of the same filled gas to the same water body are synchronized and at the same time, the same filled gas is jetted to the bubbles so that the bubbles jet by different counts for different times. An amplitude of the first pulse is decreased in this manner.</p> |
