The naturalmodes and frequencies of the framework of a knit-weaving machine are determined and its mechanic model established on the basis of finite element method.
本文用有限元素法建立织编机机架的力学模型，并计算了机架的低阶固有频率及相应的振型。
2
Urbanizing processes has been one of the primary modes for human to change the natural environment.
城市化已经成为目前人类活动改造自然环境的主要方式之一。
3
Traditional and modern modes for transmission of natural disaster map are explained.