The complexity of super grid is showed in three dimensions of space, time and control objective, new generation of EMS must be compatible with it.
超级电网在空间、时间和控制目标等三个维度表现出复杂性，新一代EMS必须与之相适应。
The courseware of three dimension dynamic multimedia was applied to experimental group and the courseware of two dimensions dynamic multimedia to control group.
将授课班级分为两组，实验组采用三维动态多媒体课件，对照组采用二维演示多媒体课件。
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