water mass identification [环境] 水质辨识
mass spectrum identification 质谱鉴定
mass property identification 质量特性辨识
mass spectrometry identification 质谱定性
The severe numerical instability in complex frequency modal mass identification from frequency response function makes it difficult to identify physical parameters.
利用频响函数识别复频率模态质量存在着严重的数值计算不稳定性，给物理参数的识别造成困难。
Within a certain domain of rock mass, identification of all blocks cut by three-dimensional finite random or fixed discontinuities is a critical basic problem in jointed rock mass researches.
在一定空间区域内，由三维有限长的随机结构面及确定性结构面切割形成的所有块体的搜索问题，即全空间块体搜索问题，是裂隙岩体研究中十分重要的基础性课题。
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