从历史的发展趋势来看，西欧作为多极世界的一极，在反对军备竞赛、维护世界和平的事业中将进一步发挥其积极作用。
Viewed from the trend of historical development, West Europe, as one pole in this multipolar world, will play an even more positive role in opposing the arms race and defending world peace.
目的：研究射频多极针对肺癌的治疗作用。
Objective: To determine the ablation effect of RF multi-hook probe for treatment of lung cancer.
设计一种用于网电源上，既能串联使用，又能并联使用的对电网污染具有一定治理作用，又可起到节电效果的多极点电源波形矫正滤波器。
The paper described a multi-pole waveform absorbing filter used in the grid for series or parallel connection, to control the grid pollution to a certain extent and save the power consumption.
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