According to wave motion theory, finite element mesh size satisfying the needs of engineering calculating precision is relevant to the upper limit of frequency range of random (response) problems.
根据波动理论，满足随机响应工程计算精度要求的有限元网格大小与待求高频随机响应问题的频率范围上限有关。
According to the model clinical manifestation, saw that the stomach creeping motion wave, hits I and the pylorus tumour and the spraying vomit and so on 3 main signs, the diagnosis then determined.
根据典型的临床表现，见到胃蠕动波、打i及幽门肿块和喷射性呕吐等3项主要征象，诊断即可确定。
The model of a kind of wave energy device moored on seabed is simplified into a spring-mass-damping system, and then its motion equation is built according to Newton's second law.
将造波水槽内二维浮体牵引弹簧回复液压缸的受力系统简化为弹簧—质量—阻尼器系统，建立数学模型，并根据牛顿第二定律得到运动方程式。
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