Light lateral and axis and torsion vibrations do not affect the normal work, but the resonance state has severity effect to drill string.

轻微的横向、轴向及扭转振动不影响钻井的正常作业，而钻柱的共振状态会对钻井产生严重的影响。

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To Compare the difference between the data of normal lumbar plexus nerve measured through Magnetic Resonance Neurography (MRN) with specimen.

比较正常腰丛神经的磁共振神经成像(MRN)测量数据和大体标本的差异。

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Normal modes in the pole and important characteristic parameters such as resonance frequency and position of the displacement node are obtained using the finite element method.

并应用有限元法对变幅杆进行了模态分析，得到了共振频率和位移节点等重要参数。

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Twenty one people, who were all normal weight, were shown pictures of calorie packed foods while they were positioned in a magnetic resonance imaging (MRI) machine at Imperial College London.

BBC: Skipping breakfast primes the brain to seek out fat