To analyze the formation of surface discharge on a dielectric plate under positive nanosecond impulse voltage in air, a wire to plane electrode system with a barrier of negative film was used.

采用感光胶片作为阻挡介质的针-板放电系统，解析空气中固体电介质上纳秒正脉冲表面放电的形成过程。

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The discharge structure includes insulated base plate, addressing poles formed respectively on positive and negative faces symmetrically, opaque insulating layer, barrier and fluorescent layer.

该放电结构包绝缘基板，其正反两面分别对称形成有寻址电极、不透明绝缘层、障壁和荧光层。

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Results show that the acoustic system of micro perforation plate can effectively reduce discharge noise.

试验表明，微穿孔板吸声结构可有效地降低排气噪声。

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