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。
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。
When the discharge pressure keeps constant, the relationship between displacement of valve rod and suction pressure, wobble plate case pressure, flow rate through control valve have been obtained.
研究结果得出了当排气压力恒定时，阀杆位移同吸气压力、摇板箱压力以及控制阀流量的稳态特性关系。
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