underdetermined meaning in Chinese
欠定的
Examples
- In actual design , the choice between use of an attribute and an element body is frequently underdetermined by design considerations and or is contextually sensitive
在实际设计中，设计考虑事项中常常不能确定是选择使用属性主体还是选择使用元素主体，并且（或者）这样的选择在上下文中很敏感。 - Based on these conditions , this thesis describes the methods for the blind source separation of noisy harmonic signals from rotating machine when the underlying system is underdetermined ( i . e . separation of n sources from m mixtures , when m < n )
本论文主要以“滚动轴承-转子”系统为对象,研究存在噪声情况下,当测试传感器的数量少于信号源的数量(欠确定)时,旋转机械振动信号的盲源分离问题。 - The main contents of this thesis include : ( 1 ) summarize and analysis of the theories on vibration transmission through rolling element bearings ( 2 ) based on the threshold setting and signal ’ s statistical approach , a method for solving the problems of denoise was developed ( 3 ) using sparsity and clustering , the method and hypotheses for underdetermined blind source separation was studied ( 4 ) the method based on potential function clustering was given for underdetermined blind source separation of noisy signals based on the assumption that the input distribution is sparse and the mixture procedure is linear , the attenuation matrix and the delay matrix were estimated by clustering . the approach was experimentally illustrated for the case of m = 2 . the separation of the signals from bearing test bed proved that the given methods are available and reliable
在需求分析和研究现状分析的基础上,本论文针对如下内容进行了重点研究: ( 1 )以滚动轴承为例,对旋转机械振动信号的传输进行了归纳分析; ( 2 )通过设定某一门限并研究信号间的统计特性,研究了旋转机械振动信号的盲源分离过程中噪声消减策略; ( 3 )应用稀疏信号分析和聚类分析方法,对盲源分离中欠确定问题的假设条件进行探讨并对分离方法进行了分析; ( 4 )采用基于势函数聚类分析的方法,研究了欠确定前提下含噪声测量过程中信号盲源分离方法。