STUDY ON METHOD OF DETERMINING FUZZY NATURAL FREQUENCY OF SUBMARINE PIPELINE SPAN
确定海底管线管跨段模糊固有频率的方法
Study on method for determining fuzzy natural frequency of submarine pipeline span
海底管线悬空段模糊固有频率的计算
Objective To investigate the span and frequency of physical symptoms of panic attack in patients with panic disorder.
目的了解惊恐障碍患者惊恐发作时躯体症状和发生频率。
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