Click on functionsymbol left of the Back button to show the functions palette.
点击Back按钮左侧的方法符号，显示函数面板。
2
It is recommended, for clarity, that a single time-functionsymbol, as appropriate, be used to represent each time function in its entirety.
清楚起见，建议使用单时间函数符号来表示整个函数中的每个时间函数。
3
By setting up a hierarchical mechanism motion model for conceptual design through the formal description of functionsymbol we provide a solid support to the computer aided conceptual motion design.