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1·The vibration and noise of electrical machine is the important symbol for evaluating the electrical machinery quality.

电机的振动和噪声是评定电机质量的重要标志。

2·Electrical components can be seen from the transparent housing of the modules. The international standard symbol should be indicated.

电气元器件实验模块应透明可视，同时标明国际标准符号。

3·Electrical drafting and Electrical figure symbol is one of the important basic standard in the field of electrical technology.

电气制图及电气图形符号是电气技术领域中重要的基础标准之一。

4·Each symbol flashed with a different frequency so that the researchers could tell from the evoked electrical potentials in the brain to which symbol the participants were attending.

每个标志闪烁的频率都不同，因此够根据大脑中的稳态视觉诱发电位，研究者们能就可以知道参与者关注了哪一个标记。