According to the theory of ultrasonic inspection, the principle of flow inspection using multi pulsecirculation method was discussed.
根据超声波探测理论，讨论了多脉冲循环法用作非接触式流量检测的原理。
2
Researchers speculate it traveled along with a pulse of warm Pacific water, part of the changing circulation patterns in the far north due to global warming.
研究者推测它们是随太平洋的洋流而来，这一洋流是由于全球变暖，在遥远的北方出现的循环洋流。
3
C — circulation: Is there a pulse? Is the person bleeding externally? Check skin color and temperature additional indications of circulation problems.