Conclusion the problems of complicated phase changement and ice blockage during CO2 gas well testing were solved, and the economic benefit was rather well.
结论解决了CO2气并测试中相态变化复杂和冰堵难题，取得了很好的经济效益。
Through the mathematics deduction of sound wave detecting method, an experiment equipment detecting ice blockage position with sensors was designed and its work principle was introduced in details.
通过声波测量法的数学推导，建立了利用传感器对冰堵段位置检测的实验装置，并详细介绍了其工作原理。
When an ice run flows to a frozen section, it can become blocked. If the blockage persists, water levels may rise and cause floods and dam bursts, threatening lives and property.
据悉，黄海和渤海段会在不同节气融化和凝结，当浮冰堆积至结冰段，会形成堵塞，若堵塞持续存在，会引起水位上升，导致洪水泛滥和大坝损毁，进而威胁生命和财产安全。
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