A number of basic figure cells are chose from the graphic warehouse through the use of menu technique and scrabble up a whole of the graph of the station signal.
运用菜单技术从图形库中选择所需的基本图形单元，拼凑成车站信号平面图。
A number of basic figure cells are chose from the graphic warehouse through the use of menu technique and scrabble up a whole of the graph of the station signal.
运用菜单技术从图形库中选择所需的基本图形单元，拼凑成车站信号平面图。
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