This paper presented a new counter-countermeasure method, known as two way anti frequency coherent method, to counter the noise frequency modulation disturbance.
该文针对接近白噪声的小指数调频干扰提出一种新型反干扰的方法：两路倒频相关法。
2
To counter the problems found in model test, it puts forward the countermeasure for solving the problems. At last, it forms super typical well flow state with optimum effect of consumed energy.
针对模型试验中发现的问题，提出解决问题的对策，最终，形成消能效果最佳的超典型井流流态。
3
The paper analyzes the serious conditions of flood calamity in Qinghai Province. To counter to the main season of flood calamity, it puts forward the various prevention countermeasure.